81553420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{18451}}^1$

素因数の和:18490

約数の個数: 48

約数和(自身を含む): 195295968

約数和(自身を除く): 113742548

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 2210, 4420, 18451, 36902, 73804, 92255, 184510, 239863, 313667, 369020, 479726, 627334, 959452, 1199315, 1254668, 1568335, 2398630, 3136670, 4077671, 4797260, 6273340, 8155342, 16310684, 20388355, 40776710, 81553420]

約数ペア:

[(1, 81553420), (2, 40776710), (4, 20388355), (5, 16310684), (10, 8155342), (13, 6273340), (17, 4797260), (20, 4077671), (26, 3136670), (34, 2398630), (52, 1568335), (65, 1254668), (68, 1199315), (85, 959452), (130, 627334), (170, 479726), (221, 369020), (260, 313667), (340, 239863), (442, 184510), (884, 92255), (1105, 73804), (2210, 36902), (4420, 18451)]