21177912

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{3407}}^1$

素因数の和:3460

約数の個数: 64

約数和(自身を含む): 62161920

約数和(自身を除く): 40984008

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 37, 42, 56, 74, 84, 111, 148, 168, 222, 259, 296, 444, 518, 777, 888, 1036, 1554, 2072, 3108, 3407, 6216, 6814, 10221, 13628, 20442, 23849, 27256, 40884, 47698, 71547, 81768, 95396, 126059, 143094, 190792, 252118, 286188, 378177, 504236, 572376, 756354, 882413, 1008472, 1512708, 1764826, 2647239, 3025416, 3529652, 5294478, 7059304, 10588956, 21177912]

約数ペア:

[(1, 21177912), (2, 10588956), (3, 7059304), (4, 5294478), (6, 3529652), (7, 3025416), (8, 2647239), (12, 1764826), (14, 1512708), (21, 1008472), (24, 882413), (28, 756354), (37, 572376), (42, 504236), (56, 378177), (74, 286188), (84, 252118), (111, 190792), (148, 143094), (168, 126059), (222, 95396), (259, 81768), (296, 71547), (444, 47698), (518, 40884), (777, 27256), (888, 23849), (1036, 20442), (1554, 13628), (2072, 10221), (3108, 6814), (3407, 6216)]