68642680

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1\times {\mathrm{281}}^1$

素因数の和:520

約数の個数: 64

約数和(自身を含む): 160807680

約数和(自身を除く): 92165000

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 197, 248, 281, 310, 394, 562, 620, 788, 985, 1124, 1240, 1405, 1576, 1970, 2248, 2810, 3940, 5620, 6107, 7880, 8711, 11240, 12214, 17422, 24428, 30535, 34844, 43555, 48856, 55357, 61070, 69688, 87110, 110714, 122140, 174220, 221428, 244280, 276785, 348440, 442856, 553570, 1107140, 1716067, 2214280, 3432134, 6864268, 8580335, 13728536, 17160670, 34321340, 68642680]

約数ペア:

[(1, 68642680), (2, 34321340), (4, 17160670), (5, 13728536), (8, 8580335), (10, 6864268), (20, 3432134), (31, 2214280), (40, 1716067), (62, 1107140), (124, 553570), (155, 442856), (197, 348440), (248, 276785), (281, 244280), (310, 221428), (394, 174220), (562, 122140), (620, 110714), (788, 87110), (985, 69688), (1124, 61070), (1240, 55357), (1405, 48856), (1576, 43555), (1970, 34844), (2248, 30535), (2810, 24428), (3940, 17422), (5620, 12214), (6107, 11240), (7880, 8711)]