19468640

素因数分解:

$2^5\times 5^1\times {\mathrm{271}}^1\times {\mathrm{449}}^1$

素因数の和:735

約数の個数: 48

約数和(自身を含む): 46267200

約数和(自身を除く): 26798560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 271, 449, 542, 898, 1084, 1355, 1796, 2168, 2245, 2710, 3592, 4336, 4490, 5420, 7184, 8672, 8980, 10840, 14368, 17960, 21680, 35920, 43360, 71840, 121679, 243358, 486716, 608395, 973432, 1216790, 1946864, 2433580, 3893728, 4867160, 9734320, 19468640]

約数ペア:

[(1, 19468640), (2, 9734320), (4, 4867160), (5, 3893728), (8, 2433580), (10, 1946864), (16, 1216790), (20, 973432), (32, 608395), (40, 486716), (80, 243358), (160, 121679), (271, 71840), (449, 43360), (542, 35920), (898, 21680), (1084, 17960), (1355, 14368), (1796, 10840), (2168, 8980), (2245, 8672), (2710, 7184), (3592, 5420), (4336, 4490)]