21388848

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{227}}^1$

素因数の和:402

約数の個数: 80

約数和(自身を含む): 60162816

約数和(自身を除く): 38773968

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 151, 156, 208, 227, 302, 312, 453, 454, 604, 624, 681, 906, 908, 1208, 1362, 1812, 1816, 1963, 2416, 2724, 2951, 3624, 3632, 3926, 5448, 5889, 5902, 7248, 7852, 8853, 10896, 11778, 11804, 15704, 17706, 23556, 23608, 31408, 34277, 35412, 47112, 47216, 68554, 70824, 94224, 102831, 137108, 141648, 205662, 274216, 411324, 445601, 548432, 822648, 891202, 1336803, 1645296, 1782404, 2673606, 3564808, 5347212, 7129616, 10694424, 21388848]

約数ペア:

[(1, 21388848), (2, 10694424), (3, 7129616), (4, 5347212), (6, 3564808), (8, 2673606), (12, 1782404), (13, 1645296), (16, 1336803), (24, 891202), (26, 822648), (39, 548432), (48, 445601), (52, 411324), (78, 274216), (104, 205662), (151, 141648), (156, 137108), (208, 102831), (227, 94224), (302, 70824), (312, 68554), (453, 47216), (454, 47112), (604, 35412), (624, 34277), (681, 31408), (906, 23608), (908, 23556), (1208, 17706), (1362, 15704), (1812, 11804), (1816, 11778), (1963, 10896), (2416, 8853), (2724, 7852), (2951, 7248), (3624, 5902), (3632, 5889), (3926, 5448)]