261041080

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{1607}}^1$

素因数の和:1780

約数の個数: 64

約数和(自身を含む): 611297280

約数和(自身を除く): 350256200

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 131, 155, 248, 262, 310, 524, 620, 655, 1048, 1240, 1310, 1607, 2620, 3214, 4061, 5240, 6428, 8035, 8122, 12856, 16070, 16244, 20305, 32140, 32488, 40610, 49817, 64280, 81220, 99634, 162440, 199268, 210517, 249085, 398536, 421034, 498170, 842068, 996340, 1052585, 1684136, 1992680, 2105170, 4210340, 6526027, 8420680, 13052054, 26104108, 32630135, 52208216, 65260270, 130520540, 261041080]

約数ペア:

[(1, 261041080), (2, 130520540), (4, 65260270), (5, 52208216), (8, 32630135), (10, 26104108), (20, 13052054), (31, 8420680), (40, 6526027), (62, 4210340), (124, 2105170), (131, 1992680), (155, 1684136), (248, 1052585), (262, 996340), (310, 842068), (524, 498170), (620, 421034), (655, 398536), (1048, 249085), (1240, 210517), (1310, 199268), (1607, 162440), (2620, 99634), (3214, 81220), (4061, 64280), (5240, 49817), (6428, 40610), (8035, 32488), (8122, 32140), (12856, 20305), (16070, 16244)]