28203175

素因数分解:

$5^2\times 7^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1$

素因数の和:78

約数の個数: 96

約数和(自身を含む): 49996800

約数和(自身を除く): 21793625

約数列:

[1, 5, 7, 11, 13, 23, 25, 35, 49, 55, 65, 77, 91, 115, 143, 161, 175, 245, 253, 275, 299, 325, 343, 385, 455, 539, 575, 637, 715, 805, 1001, 1127, 1225, 1265, 1495, 1715, 1771, 1925, 2093, 2275, 2695, 3185, 3289, 3575, 3773, 4025, 4459, 5005, 5635, 6325, 7007, 7475, 7889, 8575, 8855, 10465, 12397, 13475, 14651, 15925, 16445, 18865, 22295, 23023, 25025, 28175, 35035, 39445, 44275, 49049, 52325, 61985, 73255, 82225, 86779, 94325, 102557, 111475, 115115, 161161, 175175, 197225, 245245, 309925, 366275, 433895, 512785, 575575, 805805, 1128127, 1226225, 2169475, 2563925, 4029025, 5640635, 28203175]

約数ペア:

[(1, 28203175), (5, 5640635), (7, 4029025), (11, 2563925), (13, 2169475), (23, 1226225), (25, 1128127), (35, 805805), (49, 575575), (55, 512785), (65, 433895), (77, 366275), (91, 309925), (115, 245245), (143, 197225), (161, 175175), (175, 161161), (245, 115115), (253, 111475), (275, 102557), (299, 94325), (325, 86779), (343, 82225), (385, 73255), (455, 61985), (539, 52325), (575, 49049), (637, 44275), (715, 39445), (805, 35035), (1001, 28175), (1127, 25025), (1225, 23023), (1265, 22295), (1495, 18865), (1715, 16445), (1771, 15925), (1925, 14651), (2093, 13475), (2275, 12397), (2695, 10465), (3185, 8855), (3289, 8575), (3575, 7889), (3773, 7475), (4025, 7007), (4459, 6325), (5005, 5635)]