20171385

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^2\times {\mathrm{41}}^1$

素因数の和:123

約数の個数: 72

約数和(自身を含む): 39947544

約数和(自身を除く): 19776159

約数列:

[1, 3, 5, 9, 13, 15, 29, 39, 41, 45, 65, 87, 117, 123, 145, 195, 205, 261, 369, 377, 435, 533, 585, 615, 841, 1131, 1189, 1305, 1599, 1845, 1885, 2523, 2665, 3393, 3567, 4205, 4797, 5655, 5945, 7569, 7995, 10701, 10933, 12615, 15457, 16965, 17835, 23985, 32799, 34481, 37845, 46371, 53505, 54665, 77285, 98397, 103443, 139113, 163995, 172405, 231855, 310329, 448253, 491985, 517215, 695565, 1344759, 1551645, 2241265, 4034277, 6723795, 20171385]

約数ペア:

[(1, 20171385), (3, 6723795), (5, 4034277), (9, 2241265), (13, 1551645), (15, 1344759), (29, 695565), (39, 517215), (41, 491985), (45, 448253), (65, 310329), (87, 231855), (117, 172405), (123, 163995), (145, 139113), (195, 103443), (205, 98397), (261, 77285), (369, 54665), (377, 53505), (435, 46371), (533, 37845), (585, 34481), (615, 32799), (841, 23985), (1131, 17835), (1189, 16965), (1305, 15457), (1599, 12615), (1845, 10933), (1885, 10701), (2523, 7995), (2665, 7569), (3393, 5945), (3567, 5655), (4205, 4797)]