21494408

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{113}}^1$

素因数の和:222

約数の個数: 64

約数和(自身を含む): 45964800

約数和(自身を除く): 24470392

約数列:

[1, 2, 4, 8, 13, 26, 31, 52, 59, 62, 104, 113, 118, 124, 226, 236, 248, 403, 452, 472, 767, 806, 904, 1469, 1534, 1612, 1829, 2938, 3068, 3224, 3503, 3658, 5876, 6136, 6667, 7006, 7316, 11752, 13334, 14012, 14632, 23777, 26668, 28024, 45539, 47554, 53336, 86671, 91078, 95108, 173342, 182156, 190216, 206677, 346684, 364312, 413354, 693368, 826708, 1653416, 2686801, 5373602, 10747204, 21494408]

約数ペア:

[(1, 21494408), (2, 10747204), (4, 5373602), (8, 2686801), (13, 1653416), (26, 826708), (31, 693368), (52, 413354), (59, 364312), (62, 346684), (104, 206677), (113, 190216), (118, 182156), (124, 173342), (226, 95108), (236, 91078), (248, 86671), (403, 53336), (452, 47554), (472, 45539), (767, 28024), (806, 26668), (904, 23777), (1469, 14632), (1534, 14012), (1612, 13334), (1829, 11752), (2938, 7316), (3068, 7006), (3224, 6667), (3503, 6136), (3658, 5876)]