21276710

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{227}}^1$

素因数の和:357

約数の個数: 64

約数和(自身を含む): 47803392

約数和(自身を除く): 26526682

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 103, 130, 182, 206, 227, 454, 455, 515, 721, 910, 1030, 1135, 1339, 1442, 1589, 2270, 2678, 2951, 3178, 3605, 5902, 6695, 7210, 7945, 9373, 13390, 14755, 15890, 18746, 20657, 23381, 29510, 41314, 46762, 46865, 93730, 103285, 116905, 163667, 206570, 233810, 303953, 327334, 607906, 818335, 1519765, 1636670, 2127671, 3039530, 4255342, 10638355, 21276710]

約数ペア:

[(1, 21276710), (2, 10638355), (5, 4255342), (7, 3039530), (10, 2127671), (13, 1636670), (14, 1519765), (26, 818335), (35, 607906), (65, 327334), (70, 303953), (91, 233810), (103, 206570), (130, 163667), (182, 116905), (206, 103285), (227, 93730), (454, 46865), (455, 46762), (515, 41314), (721, 29510), (910, 23381), (1030, 20657), (1135, 18746), (1339, 15890), (1442, 14755), (1589, 13390), (2270, 9373), (2678, 7945), (2951, 7210), (3178, 6695), (3605, 5902)]