21496640

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1$

素因数の和:256

約数の個数: 112

約数和(自身を含む): 57936384

約数和(自身を除く): 36439744

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 32, 40, 44, 55, 62, 64, 80, 88, 110, 124, 155, 160, 176, 197, 220, 248, 310, 320, 341, 352, 394, 440, 496, 620, 682, 704, 788, 880, 985, 992, 1240, 1364, 1576, 1705, 1760, 1970, 1984, 2167, 2480, 2728, 3152, 3410, 3520, 3940, 4334, 4960, 5456, 6107, 6304, 6820, 7880, 8668, 9920, 10835, 10912, 12214, 12608, 13640, 15760, 17336, 21670, 21824, 24428, 27280, 30535, 31520, 34672, 43340, 48856, 54560, 61070, 63040, 67177, 69344, 86680, 97712, 109120, 122140, 134354, 138688, 173360, 195424, 244280, 268708, 335885, 346720, 390848, 488560, 537416, 671770, 693440, 977120, 1074832, 1343540, 1954240, 2149664, 2687080, 4299328, 5374160, 10748320, 21496640]

約数ペア:

[(1, 21496640), (2, 10748320), (4, 5374160), (5, 4299328), (8, 2687080), (10, 2149664), (11, 1954240), (16, 1343540), (20, 1074832), (22, 977120), (31, 693440), (32, 671770), (40, 537416), (44, 488560), (55, 390848), (62, 346720), (64, 335885), (80, 268708), (88, 244280), (110, 195424), (124, 173360), (155, 138688), (160, 134354), (176, 122140), (197, 109120), (220, 97712), (248, 86680), (310, 69344), (320, 67177), (341, 63040), (352, 61070), (394, 54560), (440, 48856), (496, 43340), (620, 34672), (682, 31520), (704, 30535), (788, 27280), (880, 24428), (985, 21824), (992, 21670), (1240, 17336), (1364, 15760), (1576, 13640), (1705, 12608), (1760, 12214), (1970, 10912), (1984, 10835), (2167, 9920), (2480, 8668), (2728, 7880), (3152, 6820), (3410, 6304), (3520, 6107), (3940, 5456), (4334, 4960)]