19974825

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{6829}}^1$

素因数の和:6858

約数の個数: 36

約数和(自身を含む): 38534860

約数和(自身を除く): 18560035

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 195, 225, 325, 585, 975, 2925, 6829, 20487, 34145, 61461, 88777, 102435, 170725, 266331, 307305, 443885, 512175, 798993, 1331655, 1536525, 2219425, 3994965, 6658275, 19974825]

約数ペア:

[(1, 19974825), (3, 6658275), (5, 3994965), (9, 2219425), (13, 1536525), (15, 1331655), (25, 798993), (39, 512175), (45, 443885), (65, 307305), (75, 266331), (117, 170725), (195, 102435), (225, 88777), (325, 61461), (585, 34145), (975, 20487), (2925, 6829)]