28026453

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{149}}^1$

素因数の和:238

約数の個数: 48

約数和(自身を含む): 47433600

約数和(自身を除く): 19407147

約数列:

[1, 3, 7, 13, 21, 39, 53, 91, 149, 159, 169, 273, 371, 447, 507, 689, 1043, 1113, 1183, 1937, 2067, 3129, 3549, 4823, 5811, 7897, 8957, 13559, 14469, 23691, 25181, 26871, 40677, 55279, 62699, 75543, 102661, 165837, 176267, 188097, 307983, 528801, 718627, 1334593, 2155881, 4003779, 9342151, 28026453]

約数ペア:

[(1, 28026453), (3, 9342151), (7, 4003779), (13, 2155881), (21, 1334593), (39, 718627), (53, 528801), (91, 307983), (149, 188097), (159, 176267), (169, 165837), (273, 102661), (371, 75543), (447, 62699), (507, 55279), (689, 40677), (1043, 26871), (1113, 25181), (1183, 23691), (1937, 14469), (2067, 13559), (3129, 8957), (3549, 7897), (4823, 5811)]