21978060

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1483}}^1$

素因数の和:1527

約数の個数: 96

約数和(自身を含む): 69807360

約数和(自身を除く): 47829300

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 19, 20, 26, 30, 38, 39, 52, 57, 60, 65, 76, 78, 95, 114, 130, 156, 190, 195, 228, 247, 260, 285, 380, 390, 494, 570, 741, 780, 988, 1140, 1235, 1482, 1483, 2470, 2964, 2966, 3705, 4449, 4940, 5932, 7410, 7415, 8898, 14820, 14830, 17796, 19279, 22245, 28177, 29660, 38558, 44490, 56354, 57837, 77116, 84531, 88980, 96395, 112708, 115674, 140885, 169062, 192790, 231348, 281770, 289185, 338124, 366301, 385580, 422655, 563540, 578370, 732602, 845310, 1098903, 1156740, 1465204, 1690620, 1831505, 2197806, 3663010, 4395612, 5494515, 7326020, 10989030, 21978060]

約数ペア:

[(1, 21978060), (2, 10989030), (3, 7326020), (4, 5494515), (5, 4395612), (6, 3663010), (10, 2197806), (12, 1831505), (13, 1690620), (15, 1465204), (19, 1156740), (20, 1098903), (26, 845310), (30, 732602), (38, 578370), (39, 563540), (52, 422655), (57, 385580), (60, 366301), (65, 338124), (76, 289185), (78, 281770), (95, 231348), (114, 192790), (130, 169062), (156, 140885), (190, 115674), (195, 112708), (228, 96395), (247, 88980), (260, 84531), (285, 77116), (380, 57837), (390, 56354), (494, 44490), (570, 38558), (741, 29660), (780, 28177), (988, 22245), (1140, 19279), (1235, 17796), (1482, 14830), (1483, 14820), (2470, 8898), (2964, 7415), (2966, 7410), (3705, 5932), (4449, 4940)]