385981360

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1\times {\mathrm{389}}^1$

素因数の和:638

約数の個数: 80

約数和(自身を含む): 916905600

約数和(自身を除く): 530924240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 157, 158, 314, 316, 389, 395, 628, 632, 778, 785, 790, 1256, 1264, 1556, 1570, 1580, 1945, 2512, 3112, 3140, 3160, 3890, 6224, 6280, 6320, 7780, 12403, 12560, 15560, 24806, 30731, 31120, 49612, 61073, 61462, 62015, 99224, 122146, 122924, 124030, 153655, 198448, 244292, 245848, 248060, 305365, 307310, 488584, 491696, 496120, 610730, 614620, 977168, 992240, 1221460, 1229240, 2442920, 2458480, 4824767, 4885840, 9649534, 19299068, 24123835, 38598136, 48247670, 77196272, 96495340, 192990680, 385981360]

約数ペア:

[(1, 385981360), (2, 192990680), (4, 96495340), (5, 77196272), (8, 48247670), (10, 38598136), (16, 24123835), (20, 19299068), (40, 9649534), (79, 4885840), (80, 4824767), (157, 2458480), (158, 2442920), (314, 1229240), (316, 1221460), (389, 992240), (395, 977168), (628, 614620), (632, 610730), (778, 496120), (785, 491696), (790, 488584), (1256, 307310), (1264, 305365), (1556, 248060), (1570, 245848), (1580, 244292), (1945, 198448), (2512, 153655), (3112, 124030), (3140, 122924), (3160, 122146), (3890, 99224), (6224, 62015), (6280, 61462), (6320, 61073), (7780, 49612), (12403, 31120), (12560, 30731), (15560, 24806)]