20185425

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{103}}^1$

素因数の和:199

約数の個数: 72

約数和(自身を含む): 39900224

約数和(自身を除く): 19714799

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 67, 75, 103, 117, 195, 201, 225, 309, 325, 335, 515, 585, 603, 871, 927, 975, 1005, 1339, 1545, 1675, 2575, 2613, 2925, 3015, 4017, 4355, 4635, 5025, 6695, 6901, 7725, 7839, 12051, 13065, 15075, 20085, 20703, 21775, 23175, 33475, 34505, 39195, 60255, 62109, 65325, 89713, 100425, 103515, 172525, 195975, 269139, 301275, 310545, 448565, 517575, 807417, 1345695, 1552725, 2242825, 4037085, 6728475, 20185425]

約数ペア:

[(1, 20185425), (3, 6728475), (5, 4037085), (9, 2242825), (13, 1552725), (15, 1345695), (25, 807417), (39, 517575), (45, 448565), (65, 310545), (67, 301275), (75, 269139), (103, 195975), (117, 172525), (195, 103515), (201, 100425), (225, 89713), (309, 65325), (325, 62109), (335, 60255), (515, 39195), (585, 34505), (603, 33475), (871, 23175), (927, 21775), (975, 20703), (1005, 20085), (1339, 15075), (1545, 13065), (1675, 12051), (2575, 7839), (2613, 7725), (2925, 6901), (3015, 6695), (4017, 5025), (4355, 4635)]