20953660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{397}}^1$

素因数の和:455

約数の個数: 96

約数和(自身を含む): 56165760

約数和(自身を除く): 35212100

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 29, 35, 52, 58, 65, 70, 91, 116, 130, 140, 145, 182, 203, 260, 290, 364, 377, 397, 406, 455, 580, 754, 794, 812, 910, 1015, 1508, 1588, 1820, 1885, 1985, 2030, 2639, 2779, 3770, 3970, 4060, 5161, 5278, 5558, 7540, 7940, 10322, 10556, 11116, 11513, 13195, 13895, 20644, 23026, 25805, 26390, 27790, 36127, 46052, 51610, 52780, 55580, 57565, 72254, 80591, 103220, 115130, 144508, 149669, 161182, 180635, 230260, 299338, 322364, 361270, 402955, 598676, 722540, 748345, 805910, 1047683, 1496690, 1611820, 2095366, 2993380, 4190732, 5238415, 10476830, 20953660]

約数ペア:

[(1, 20953660), (2, 10476830), (4, 5238415), (5, 4190732), (7, 2993380), (10, 2095366), (13, 1611820), (14, 1496690), (20, 1047683), (26, 805910), (28, 748345), (29, 722540), (35, 598676), (52, 402955), (58, 361270), (65, 322364), (70, 299338), (91, 230260), (116, 180635), (130, 161182), (140, 149669), (145, 144508), (182, 115130), (203, 103220), (260, 80591), (290, 72254), (364, 57565), (377, 55580), (397, 52780), (406, 51610), (455, 46052), (580, 36127), (754, 27790), (794, 26390), (812, 25805), (910, 23026), (1015, 20644), (1508, 13895), (1588, 13195), (1820, 11513), (1885, 11116), (1985, 10556), (2030, 10322), (2639, 7940), (2779, 7540), (3770, 5558), (3970, 5278), (4060, 5161)]