21657664

素因数分解:

$2^6\times 7^1\times {\mathrm{29}}^1\times {\mathrm{1667}}^1$

素因数の和:1715

約数の個数: 56

約数和(自身を含む): 50840640

約数和(自身を除く): 29182976

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 32, 56, 58, 64, 112, 116, 203, 224, 232, 406, 448, 464, 812, 928, 1624, 1667, 1856, 3248, 3334, 6496, 6668, 11669, 12992, 13336, 23338, 26672, 46676, 48343, 53344, 93352, 96686, 106688, 186704, 193372, 338401, 373408, 386744, 676802, 746816, 773488, 1353604, 1546976, 2707208, 3093952, 5414416, 10828832, 21657664]

約数ペア:

[(1, 21657664), (2, 10828832), (4, 5414416), (7, 3093952), (8, 2707208), (14, 1546976), (16, 1353604), (28, 773488), (29, 746816), (32, 676802), (56, 386744), (58, 373408), (64, 338401), (112, 193372), (116, 186704), (203, 106688), (224, 96686), (232, 93352), (406, 53344), (448, 48343), (464, 46676), (812, 26672), (928, 23338), (1624, 13336), (1667, 12992), (1856, 11669), (3248, 6668), (3334, 6496)]