204548420

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{43}}^1\times {\mathrm{823}}^1$

素因数の和:909

約数の個数: 72

約数和(自身を含む): 467484864

約数和(自身を除く): 262936444

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 43, 68, 85, 86, 170, 172, 215, 289, 340, 430, 578, 731, 823, 860, 1156, 1445, 1462, 1646, 2890, 2924, 3292, 3655, 4115, 5780, 7310, 8230, 12427, 13991, 14620, 16460, 24854, 27982, 35389, 49708, 55964, 62135, 69955, 70778, 124270, 139910, 141556, 176945, 237847, 248540, 279820, 353890, 475694, 601613, 707780, 951388, 1189235, 1203226, 2378470, 2406452, 3008065, 4756940, 6016130, 10227421, 12032260, 20454842, 40909684, 51137105, 102274210, 204548420]

約数ペア:

[(1, 204548420), (2, 102274210), (4, 51137105), (5, 40909684), (10, 20454842), (17, 12032260), (20, 10227421), (34, 6016130), (43, 4756940), (68, 3008065), (85, 2406452), (86, 2378470), (170, 1203226), (172, 1189235), (215, 951388), (289, 707780), (340, 601613), (430, 475694), (578, 353890), (731, 279820), (823, 248540), (860, 237847), (1156, 176945), (1445, 141556), (1462, 139910), (1646, 124270), (2890, 70778), (2924, 69955), (3292, 62135), (3655, 55964), (4115, 49708), (5780, 35389), (7310, 27982), (8230, 24854), (12427, 16460), (13991, 14620)]