21789840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{557}}^1$

素因数の和:736

約数の個数: 80

約数和(自身を含む): 68084928

約数和(自身を除く): 46295088

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 163, 240, 326, 489, 557, 652, 815, 978, 1114, 1304, 1630, 1671, 1956, 2228, 2445, 2608, 2785, 3260, 3342, 3912, 4456, 4890, 5570, 6520, 6684, 7824, 8355, 8912, 9780, 11140, 13040, 13368, 16710, 19560, 22280, 26736, 33420, 39120, 44560, 66840, 90791, 133680, 181582, 272373, 363164, 453955, 544746, 726328, 907910, 1089492, 1361865, 1452656, 1815820, 2178984, 2723730, 3631640, 4357968, 5447460, 7263280, 10894920, 21789840]

約数ペア:

[(1, 21789840), (2, 10894920), (3, 7263280), (4, 5447460), (5, 4357968), (6, 3631640), (8, 2723730), (10, 2178984), (12, 1815820), (15, 1452656), (16, 1361865), (20, 1089492), (24, 907910), (30, 726328), (40, 544746), (48, 453955), (60, 363164), (80, 272373), (120, 181582), (163, 133680), (240, 90791), (326, 66840), (489, 44560), (557, 39120), (652, 33420), (815, 26736), (978, 22280), (1114, 19560), (1304, 16710), (1630, 13368), (1671, 13040), (1956, 11140), (2228, 9780), (2445, 8912), (2608, 8355), (2785, 7824), (3260, 6684), (3342, 6520), (3912, 5570), (4456, 4890)]