31256680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{277}}^1$

素因数の和:339

約数の個数: 128

約数和(自身を含む): 89671680

約数和(自身を除く): 58415000

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 31, 35, 40, 52, 56, 62, 65, 70, 91, 104, 124, 130, 140, 155, 182, 217, 248, 260, 277, 280, 310, 364, 403, 434, 455, 520, 554, 620, 728, 806, 868, 910, 1085, 1108, 1240, 1385, 1612, 1736, 1820, 1939, 2015, 2170, 2216, 2770, 2821, 3224, 3601, 3640, 3878, 4030, 4340, 5540, 5642, 7202, 7756, 8060, 8587, 8680, 9695, 11080, 11284, 14105, 14404, 15512, 16120, 17174, 18005, 19390, 22568, 25207, 28210, 28808, 34348, 36010, 38780, 42935, 50414, 56420, 60109, 68696, 72020, 77560, 85870, 100828, 111631, 112840, 120218, 126035, 144040, 171740, 201656, 223262, 240436, 252070, 300545, 343480, 446524, 480872, 504140, 558155, 601090, 781417, 893048, 1008280, 1116310, 1202180, 1562834, 2232620, 2404360, 3125668, 3907085, 4465240, 6251336, 7814170, 15628340, 31256680]

約数ペア:

[(1, 31256680), (2, 15628340), (4, 7814170), (5, 6251336), (7, 4465240), (8, 3907085), (10, 3125668), (13, 2404360), (14, 2232620), (20, 1562834), (26, 1202180), (28, 1116310), (31, 1008280), (35, 893048), (40, 781417), (52, 601090), (56, 558155), (62, 504140), (65, 480872), (70, 446524), (91, 343480), (104, 300545), (124, 252070), (130, 240436), (140, 223262), (155, 201656), (182, 171740), (217, 144040), (248, 126035), (260, 120218), (277, 112840), (280, 111631), (310, 100828), (364, 85870), (403, 77560), (434, 72020), (455, 68696), (520, 60109), (554, 56420), (620, 50414), (728, 42935), (806, 38780), (868, 36010), (910, 34348), (1085, 28808), (1108, 28210), (1240, 25207), (1385, 22568), (1612, 19390), (1736, 18005), (1820, 17174), (1939, 16120), (2015, 15512), (2170, 14404), (2216, 14105), (2770, 11284), (2821, 11080), (3224, 9695), (3601, 8680), (3640, 8587), (3878, 8060), (4030, 7756), (4340, 7202), (5540, 5642)]