1278528040

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{677}}^1\times {\mathrm{1523}}^1$

素因数の和:2242

約数の個数: 64

約数和(自身を含む): 2975823360

約数和(自身を除く): 1697295320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 677, 1240, 1354, 1523, 2708, 3046, 3385, 5416, 6092, 6770, 7615, 12184, 13540, 15230, 20987, 27080, 30460, 41974, 47213, 60920, 83948, 94426, 104935, 167896, 188852, 209870, 236065, 377704, 419740, 472130, 839480, 944260, 1031071, 1888520, 2062142, 4124284, 5155355, 8248568, 10310710, 20621420, 31963201, 41242840, 63926402, 127852804, 159816005, 255705608, 319632010, 639264020, 1278528040]

約数ペア:

[(1, 1278528040), (2, 639264020), (4, 319632010), (5, 255705608), (8, 159816005), (10, 127852804), (20, 63926402), (31, 41242840), (40, 31963201), (62, 20621420), (124, 10310710), (155, 8248568), (248, 5155355), (310, 4124284), (620, 2062142), (677, 1888520), (1240, 1031071), (1354, 944260), (1523, 839480), (2708, 472130), (3046, 419740), (3385, 377704), (5416, 236065), (6092, 209870), (6770, 188852), (7615, 167896), (12184, 104935), (13540, 94426), (15230, 83948), (20987, 60920), (27080, 47213), (30460, 41974)]