21406840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5881}}^1$

素因数の和:5912

約数の個数: 64

約数和(自身を含む): 59290560

約数和(自身を除く): 37883720

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, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 5881, 11762, 23524, 29405, 41167, 47048, 58810, 76453, 82334, 117620, 152906, 164668, 205835, 235240, 305812, 329336, 382265, 411670, 535171, 611624, 764530, 823340, 1070342, 1529060, 1646680, 2140684, 2675855, 3058120, 4281368, 5351710, 10703420, 21406840]

約数ペア:

[(1, 21406840), (2, 10703420), (4, 5351710), (5, 4281368), (7, 3058120), (8, 2675855), (10, 2140684), (13, 1646680), (14, 1529060), (20, 1070342), (26, 823340), (28, 764530), (35, 611624), (40, 535171), (52, 411670), (56, 382265), (65, 329336), (70, 305812), (91, 235240), (104, 205835), (130, 164668), (140, 152906), (182, 117620), (260, 82334), (280, 76453), (364, 58810), (455, 47048), (520, 41167), (728, 29405), (910, 23524), (1820, 11762), (3640, 5881)]