278300000

素因数分解:

$2^5\times 5^5\times {\mathrm{11}}^2\times {\mathrm{23}}^1$

素因数の和:80

約数の個数: 216

約数和(自身を含む): 785480976

約数和(自身を除く): 507180976

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 23, 25, 32, 40, 44, 46, 50, 55, 80, 88, 92, 100, 110, 115, 121, 125, 160, 176, 184, 200, 220, 230, 242, 250, 253, 275, 352, 368, 400, 440, 460, 484, 500, 506, 550, 575, 605, 625, 736, 800, 880, 920, 968, 1000, 1012, 1100, 1150, 1210, 1250, 1265, 1375, 1760, 1840, 1936, 2000, 2024, 2200, 2300, 2420, 2500, 2530, 2750, 2783, 2875, 3025, 3125, 3680, 3872, 4000, 4048, 4400, 4600, 4840, 5000, 5060, 5500, 5566, 5750, 6050, 6250, 6325, 6875, 8096, 8800, 9200, 9680, 10000, 10120, 11000, 11132, 11500, 12100, 12500, 12650, 13750, 13915, 14375, 15125, 18400, 19360, 20000, 20240, 22000, 22264, 23000, 24200, 25000, 25300, 27500, 27830, 28750, 30250, 31625, 34375, 40480, 44000, 44528, 46000, 48400, 50000, 50600, 55000, 55660, 57500, 60500, 63250, 68750, 69575, 71875, 75625, 89056, 92000, 96800, 100000, 101200, 110000, 111320, 115000, 121000, 126500, 137500, 139150, 143750, 151250, 158125, 202400, 220000, 222640, 230000, 242000, 253000, 275000, 278300, 287500, 302500, 316250, 347875, 378125, 445280, 460000, 484000, 506000, 550000, 556600, 575000, 605000, 632500, 695750, 756250, 790625, 1012000, 1100000, 1113200, 1150000, 1210000, 1265000, 1391500, 1512500, 1581250, 1739375, 2226400, 2300000, 2420000, 2530000, 2783000, 3025000, 3162500, 3478750, 5060000, 5566000, 6050000, 6325000, 6957500, 8696875, 11132000, 12100000, 12650000, 13915000, 17393750, 25300000, 27830000, 34787500, 55660000, 69575000, 139150000, 278300000]

約数ペア:

[(1, 278300000), (2, 139150000), (4, 69575000), (5, 55660000), (8, 34787500), (10, 27830000), (11, 25300000), (16, 17393750), (20, 13915000), (22, 12650000), (23, 12100000), (25, 11132000), (32, 8696875), (40, 6957500), (44, 6325000), (46, 6050000), (50, 5566000), (55, 5060000), (80, 3478750), (88, 3162500), (92, 3025000), (100, 2783000), (110, 2530000), (115, 2420000), (121, 2300000), (125, 2226400), (160, 1739375), (176, 1581250), (184, 1512500), (200, 1391500), (220, 1265000), (230, 1210000), (242, 1150000), (250, 1113200), (253, 1100000), (275, 1012000), (352, 790625), (368, 756250), (400, 695750), (440, 632500), (460, 605000), (484, 575000), (500, 556600), (506, 550000), (550, 506000), (575, 484000), (605, 460000), (625, 445280), (736, 378125), (800, 347875), (880, 316250), (920, 302500), (968, 287500), (1000, 278300), (1012, 275000), (1100, 253000), (1150, 242000), (1210, 230000), (1250, 222640), (1265, 220000), (1375, 202400), (1760, 158125), (1840, 151250), (1936, 143750), (2000, 139150), (2024, 137500), (2200, 126500), (2300, 121000), (2420, 115000), (2500, 111320), (2530, 110000), (2750, 101200), (2783, 100000), (2875, 96800), (3025, 92000), (3125, 89056), (3680, 75625), (3872, 71875), (4000, 69575), (4048, 68750), (4400, 63250), (4600, 60500), (4840, 57500), (5000, 55660), (5060, 55000), (5500, 50600), (5566, 50000), (5750, 48400), (6050, 46000), (6250, 44528), (6325, 44000), (6875, 40480), (8096, 34375), (8800, 31625), (9200, 30250), (9680, 28750), (10000, 27830), (10120, 27500), (11000, 25300), (11132, 25000), (11500, 24200), (12100, 23000), (12500, 22264), (12650, 22000), (13750, 20240), (13915, 20000), (14375, 19360), (15125, 18400)]