20042672

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{577}}^1$

素因数の和:765

約数の個数: 40

約数和(自身を含む): 42143136

約数和(自身を除く): 22100464

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 167, 208, 334, 577, 668, 1154, 1336, 2171, 2308, 2672, 4342, 4616, 7501, 8684, 9232, 15002, 17368, 30004, 34736, 60008, 96359, 120016, 192718, 385436, 770872, 1252667, 1541744, 2505334, 5010668, 10021336, 20042672]

約数ペア:

[(1, 20042672), (2, 10021336), (4, 5010668), (8, 2505334), (13, 1541744), (16, 1252667), (26, 770872), (52, 385436), (104, 192718), (167, 120016), (208, 96359), (334, 60008), (577, 34736), (668, 30004), (1154, 17368), (1336, 15002), (2171, 9232), (2308, 8684), (2672, 7501), (4342, 4616)]