64475920

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{18743}}^1$

素因数の和:18799

約数の個数: 40

約数和(自身を含む): 153400896

約数和(自身を除く): 88924976

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 18743, 37486, 74972, 93715, 149944, 187430, 299888, 374860, 749720, 805949, 1499440, 1611898, 3223796, 4029745, 6447592, 8059490, 12895184, 16118980, 32237960, 64475920]

約数ペア:

[(1, 64475920), (2, 32237960), (4, 16118980), (5, 12895184), (8, 8059490), (10, 6447592), (16, 4029745), (20, 3223796), (40, 1611898), (43, 1499440), (80, 805949), (86, 749720), (172, 374860), (215, 299888), (344, 187430), (430, 149944), (688, 93715), (860, 74972), (1720, 37486), (3440, 18743)]