19851000

素因数分解:

$2^3\times 3^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{509}}^1$

素因数の和:546

約数の個数: 128

約数和(自身を含む): 66830400

約数和(自身を除く): 46979400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 25, 26, 30, 39, 40, 50, 52, 60, 65, 75, 78, 100, 104, 120, 125, 130, 150, 156, 195, 200, 250, 260, 300, 312, 325, 375, 390, 500, 509, 520, 600, 650, 750, 780, 975, 1000, 1018, 1300, 1500, 1527, 1560, 1625, 1950, 2036, 2545, 2600, 3000, 3054, 3250, 3900, 4072, 4875, 5090, 6108, 6500, 6617, 7635, 7800, 9750, 10180, 12216, 12725, 13000, 13234, 15270, 19500, 19851, 20360, 25450, 26468, 30540, 33085, 38175, 39000, 39702, 50900, 52936, 61080, 63625, 66170, 76350, 79404, 99255, 101800, 127250, 132340, 152700, 158808, 165425, 190875, 198510, 254500, 264680, 305400, 330850, 381750, 397020, 496275, 509000, 661700, 763500, 794040, 827125, 992550, 1323400, 1527000, 1654250, 1985100, 2481375, 3308500, 3970200, 4962750, 6617000, 9925500, 19851000]

約数ペア:

[(1, 19851000), (2, 9925500), (3, 6617000), (4, 4962750), (5, 3970200), (6, 3308500), (8, 2481375), (10, 1985100), (12, 1654250), (13, 1527000), (15, 1323400), (20, 992550), (24, 827125), (25, 794040), (26, 763500), (30, 661700), (39, 509000), (40, 496275), (50, 397020), (52, 381750), (60, 330850), (65, 305400), (75, 264680), (78, 254500), (100, 198510), (104, 190875), (120, 165425), (125, 158808), (130, 152700), (150, 132340), (156, 127250), (195, 101800), (200, 99255), (250, 79404), (260, 76350), (300, 66170), (312, 63625), (325, 61080), (375, 52936), (390, 50900), (500, 39702), (509, 39000), (520, 38175), (600, 33085), (650, 30540), (750, 26468), (780, 25450), (975, 20360), (1000, 19851), (1018, 19500), (1300, 15270), (1500, 13234), (1527, 13000), (1560, 12725), (1625, 12216), (1950, 10180), (2036, 9750), (2545, 7800), (2600, 7635), (3000, 6617), (3054, 6500), (3250, 6108), (3900, 5090), (4072, 4875)]