28302820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{15551}}^1$

素因数の和:15580

約数の個数: 48

約数和(自身を含む): 73156608

約数和(自身を除く): 44853788

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 15551, 31102, 62204, 77755, 108857, 155510, 202163, 217714, 311020, 404326, 435428, 544285, 808652, 1010815, 1088570, 1415141, 2021630, 2177140, 2830282, 4043260, 5660564, 7075705, 14151410, 28302820]

約数ペア:

[(1, 28302820), (2, 14151410), (4, 7075705), (5, 5660564), (7, 4043260), (10, 2830282), (13, 2177140), (14, 2021630), (20, 1415141), (26, 1088570), (28, 1010815), (35, 808652), (52, 544285), (65, 435428), (70, 404326), (91, 311020), (130, 217714), (140, 202163), (182, 155510), (260, 108857), (364, 77755), (455, 62204), (910, 31102), (1820, 15551)]