668814675

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^2$

素因数の和:245

約数の個数: 72

約数和(自身を含む): 1179262320

約数和(自身を除く): 510447645

約数列:

[1, 3, 5, 15, 25, 29, 61, 71, 75, 87, 145, 183, 213, 305, 355, 435, 725, 915, 1065, 1525, 1769, 1775, 2059, 2175, 4331, 4575, 5041, 5307, 5325, 6177, 8845, 10295, 12993, 15123, 21655, 25205, 26535, 30885, 44225, 51475, 64965, 75615, 108275, 125599, 126025, 132675, 146189, 154425, 307501, 324825, 376797, 378075, 438567, 627995, 730945, 922503, 1537505, 1883985, 2192835, 3139975, 3654725, 4612515, 7687525, 8917529, 9419925, 10964175, 23062575, 26752587, 44587645, 133762935, 222938225, 668814675]

約数ペア:

[(1, 668814675), (3, 222938225), (5, 133762935), (15, 44587645), (25, 26752587), (29, 23062575), (61, 10964175), (71, 9419925), (75, 8917529), (87, 7687525), (145, 4612515), (183, 3654725), (213, 3139975), (305, 2192835), (355, 1883985), (435, 1537505), (725, 922503), (915, 730945), (1065, 627995), (1525, 438567), (1769, 378075), (1775, 376797), (2059, 324825), (2175, 307501), (4331, 154425), (4575, 146189), (5041, 132675), (5307, 126025), (5325, 125599), (6177, 108275), (8845, 75615), (10295, 64965), (12993, 51475), (15123, 44225), (21655, 30885), (25205, 26535)]