18786040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{397}}^1$

素因数の和:441

約数の個数: 96

約数和(自身を含む): 52440480

約数和(自身を除く): 33654440

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 169, 182, 260, 280, 338, 364, 397, 455, 520, 676, 728, 794, 845, 910, 1183, 1352, 1588, 1690, 1820, 1985, 2366, 2779, 3176, 3380, 3640, 3970, 4732, 5161, 5558, 5915, 6760, 7940, 9464, 10322, 11116, 11830, 13895, 15880, 20644, 22232, 23660, 25805, 27790, 36127, 41288, 47320, 51610, 55580, 67093, 72254, 103220, 111160, 134186, 144508, 180635, 206440, 268372, 289016, 335465, 361270, 469651, 536744, 670930, 722540, 939302, 1341860, 1445080, 1878604, 2348255, 2683720, 3757208, 4696510, 9393020, 18786040]

約数ペア:

[(1, 18786040), (2, 9393020), (4, 4696510), (5, 3757208), (7, 2683720), (8, 2348255), (10, 1878604), (13, 1445080), (14, 1341860), (20, 939302), (26, 722540), (28, 670930), (35, 536744), (40, 469651), (52, 361270), (56, 335465), (65, 289016), (70, 268372), (91, 206440), (104, 180635), (130, 144508), (140, 134186), (169, 111160), (182, 103220), (260, 72254), (280, 67093), (338, 55580), (364, 51610), (397, 47320), (455, 41288), (520, 36127), (676, 27790), (728, 25805), (794, 23660), (845, 22232), (910, 20644), (1183, 15880), (1352, 13895), (1588, 11830), (1690, 11116), (1820, 10322), (1985, 9464), (2366, 7940), (2779, 6760), (3176, 5915), (3380, 5558), (3640, 5161), (3970, 4732)]