19401720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{12437}}^1$

素因数の和:12464

約数の個数: 64

約数和(自身を含む): 62687520

約数和(自身を除く): 43285800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 12437, 24874, 37311, 49748, 62185, 74622, 99496, 124370, 149244, 161681, 186555, 248740, 298488, 323362, 373110, 485043, 497480, 646724, 746220, 808405, 970086, 1293448, 1492440, 1616810, 1940172, 2425215, 3233620, 3880344, 4850430, 6467240, 9700860, 19401720]

約数ペア:

[(1, 19401720), (2, 9700860), (3, 6467240), (4, 4850430), (5, 3880344), (6, 3233620), (8, 2425215), (10, 1940172), (12, 1616810), (13, 1492440), (15, 1293448), (20, 970086), (24, 808405), (26, 746220), (30, 646724), (39, 497480), (40, 485043), (52, 373110), (60, 323362), (65, 298488), (78, 248740), (104, 186555), (120, 161681), (130, 149244), (156, 124370), (195, 99496), (260, 74622), (312, 62185), (390, 49748), (520, 37311), (780, 24874), (1560, 12437)]