261401920

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2027}}^1$

素因数の和:2088

約数の個数: 112

約数和(自身を含む): 692310528

約数和(自身を除く): 430908608

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 130, 155, 160, 208, 248, 260, 310, 320, 403, 416, 496, 520, 620, 806, 832, 992, 1040, 1240, 1612, 1984, 2015, 2027, 2080, 2480, 3224, 4030, 4054, 4160, 4960, 6448, 8060, 8108, 9920, 10135, 12896, 16120, 16216, 20270, 25792, 26351, 32240, 32432, 40540, 52702, 62837, 64480, 64864, 81080, 105404, 125674, 128960, 129728, 131755, 162160, 210808, 251348, 263510, 314185, 324320, 421616, 502696, 527020, 628370, 648640, 816881, 843232, 1005392, 1054040, 1256740, 1633762, 1686464, 2010784, 2108080, 2513480, 3267524, 4021568, 4084405, 4216160, 5026960, 6535048, 8168810, 8432320, 10053920, 13070096, 16337620, 20107840, 26140192, 32675240, 52280384, 65350480, 130700960, 261401920]

約数ペア:

[(1, 261401920), (2, 130700960), (4, 65350480), (5, 52280384), (8, 32675240), (10, 26140192), (13, 20107840), (16, 16337620), (20, 13070096), (26, 10053920), (31, 8432320), (32, 8168810), (40, 6535048), (52, 5026960), (62, 4216160), (64, 4084405), (65, 4021568), (80, 3267524), (104, 2513480), (124, 2108080), (130, 2010784), (155, 1686464), (160, 1633762), (208, 1256740), (248, 1054040), (260, 1005392), (310, 843232), (320, 816881), (403, 648640), (416, 628370), (496, 527020), (520, 502696), (620, 421616), (806, 324320), (832, 314185), (992, 263510), (1040, 251348), (1240, 210808), (1612, 162160), (1984, 131755), (2015, 129728), (2027, 128960), (2080, 125674), (2480, 105404), (3224, 81080), (4030, 64864), (4054, 64480), (4160, 62837), (4960, 52702), (6448, 40540), (8060, 32432), (8108, 32240), (9920, 26351), (10135, 25792), (12896, 20270), (16120, 16216)]