21013524

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1367}}^1$

素因数の和:1445

約数の個数: 72

約数和(自身を含む): 61746048

約数和(自身を除く): 40732524

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 61, 63, 84, 122, 126, 183, 244, 252, 366, 427, 549, 732, 854, 1098, 1281, 1367, 1708, 2196, 2562, 2734, 3843, 4101, 5124, 5468, 7686, 8202, 9569, 12303, 15372, 16404, 19138, 24606, 28707, 38276, 49212, 57414, 83387, 86121, 114828, 166774, 172242, 250161, 333548, 344484, 500322, 583709, 750483, 1000644, 1167418, 1500966, 1751127, 2334836, 3001932, 3502254, 5253381, 7004508, 10506762, 21013524]

約数ペア:

[(1, 21013524), (2, 10506762), (3, 7004508), (4, 5253381), (6, 3502254), (7, 3001932), (9, 2334836), (12, 1751127), (14, 1500966), (18, 1167418), (21, 1000644), (28, 750483), (36, 583709), (42, 500322), (61, 344484), (63, 333548), (84, 250161), (122, 172242), (126, 166774), (183, 114828), (244, 86121), (252, 83387), (366, 57414), (427, 49212), (549, 38276), (732, 28707), (854, 24606), (1098, 19138), (1281, 16404), (1367, 15372), (1708, 12303), (2196, 9569), (2562, 8202), (2734, 7686), (3843, 5468), (4101, 5124)]