21204960

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{6311}}^1$

素因数の和:6336

約数の個数: 96

約数和(自身を含む): 76349952

約数和(自身を除く): 55144992

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 70, 80, 84, 96, 105, 112, 120, 140, 160, 168, 210, 224, 240, 280, 336, 420, 480, 560, 672, 840, 1120, 1680, 3360, 6311, 12622, 18933, 25244, 31555, 37866, 44177, 50488, 63110, 75732, 88354, 94665, 100976, 126220, 132531, 151464, 176708, 189330, 201952, 220885, 252440, 265062, 302928, 353416, 378660, 441770, 504880, 530124, 605856, 662655, 706832, 757320, 883540, 1009760, 1060248, 1325310, 1413664, 1514640, 1767080, 2120496, 2650620, 3029280, 3534160, 4240992, 5301240, 7068320, 10602480, 21204960]

約数ペア:

[(1, 21204960), (2, 10602480), (3, 7068320), (4, 5301240), (5, 4240992), (6, 3534160), (7, 3029280), (8, 2650620), (10, 2120496), (12, 1767080), (14, 1514640), (15, 1413664), (16, 1325310), (20, 1060248), (21, 1009760), (24, 883540), (28, 757320), (30, 706832), (32, 662655), (35, 605856), (40, 530124), (42, 504880), (48, 441770), (56, 378660), (60, 353416), (70, 302928), (80, 265062), (84, 252440), (96, 220885), (105, 201952), (112, 189330), (120, 176708), (140, 151464), (160, 132531), (168, 126220), (210, 100976), (224, 94665), (240, 88354), (280, 75732), (336, 63110), (420, 50488), (480, 44177), (560, 37866), (672, 31555), (840, 25244), (1120, 18933), (1680, 12622), (3360, 6311)]