215319920

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{1181}}^1$

素因数の和:1290

約数の個数: 80

約数和(自身を含む): 522368352

約数和(自身を除く): 307048432

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 53, 80, 86, 106, 172, 212, 215, 265, 344, 424, 430, 530, 688, 848, 860, 1060, 1181, 1720, 2120, 2279, 2362, 3440, 4240, 4558, 4724, 5905, 9116, 9448, 11395, 11810, 18232, 18896, 22790, 23620, 36464, 45580, 47240, 50783, 62593, 91160, 94480, 101566, 125186, 182320, 203132, 250372, 253915, 312965, 406264, 500744, 507830, 625930, 812528, 1001488, 1015660, 1251860, 2031320, 2503720, 2691499, 4062640, 5007440, 5382998, 10765996, 13457495, 21531992, 26914990, 43063984, 53829980, 107659960, 215319920]

約数ペア:

[(1, 215319920), (2, 107659960), (4, 53829980), (5, 43063984), (8, 26914990), (10, 21531992), (16, 13457495), (20, 10765996), (40, 5382998), (43, 5007440), (53, 4062640), (80, 2691499), (86, 2503720), (106, 2031320), (172, 1251860), (212, 1015660), (215, 1001488), (265, 812528), (344, 625930), (424, 507830), (430, 500744), (530, 406264), (688, 312965), (848, 253915), (860, 250372), (1060, 203132), (1181, 182320), (1720, 125186), (2120, 101566), (2279, 94480), (2362, 91160), (3440, 62593), (4240, 50783), (4558, 47240), (4724, 45580), (5905, 36464), (9116, 23620), (9448, 22790), (11395, 18896), (11810, 18232)]