257685228

素因数分解:

$2^2\times 3^2\times {\mathrm{61}}^1\times {\mathrm{271}}^1\times {\mathrm{433}}^1$

素因数の和:775

約数の個数: 72

約数和(自身を含む): 666026816

約数和(自身を除く): 408341588

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 61, 122, 183, 244, 271, 366, 433, 542, 549, 732, 813, 866, 1084, 1098, 1299, 1626, 1732, 2196, 2439, 2598, 3252, 3897, 4878, 5196, 7794, 9756, 15588, 16531, 26413, 33062, 49593, 52826, 66124, 79239, 99186, 105652, 117343, 148779, 158478, 198372, 234686, 237717, 297558, 316956, 352029, 469372, 475434, 595116, 704058, 950868, 1056087, 1408116, 2112174, 4224348, 7157923, 14315846, 21473769, 28631692, 42947538, 64421307, 85895076, 128842614, 257685228]

約数ペア:

[(1, 257685228), (2, 128842614), (3, 85895076), (4, 64421307), (6, 42947538), (9, 28631692), (12, 21473769), (18, 14315846), (36, 7157923), (61, 4224348), (122, 2112174), (183, 1408116), (244, 1056087), (271, 950868), (366, 704058), (433, 595116), (542, 475434), (549, 469372), (732, 352029), (813, 316956), (866, 297558), (1084, 237717), (1098, 234686), (1299, 198372), (1626, 158478), (1732, 148779), (2196, 117343), (2439, 105652), (2598, 99186), (3252, 79239), (3897, 66124), (4878, 52826), (5196, 49593), (7794, 33062), (9756, 26413), (15588, 16531)]