21737820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^2$

素因数の和:116

約数の個数: 144

約数和(自身を含む): 70066080

約数和(自身を除く): 48328260

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 29, 30, 31, 39, 52, 58, 60, 62, 65, 78, 87, 93, 116, 124, 130, 145, 155, 156, 174, 186, 195, 260, 290, 310, 348, 372, 377, 390, 403, 435, 465, 580, 620, 754, 780, 806, 870, 899, 930, 961, 1131, 1209, 1508, 1612, 1740, 1798, 1860, 1885, 1922, 2015, 2262, 2418, 2697, 2883, 3596, 3770, 3844, 4030, 4495, 4524, 4805, 4836, 5394, 5655, 5766, 6045, 7540, 8060, 8990, 9610, 10788, 11310, 11532, 11687, 12090, 12493, 13485, 14415, 17980, 19220, 22620, 23374, 24180, 24986, 26970, 27869, 28830, 35061, 37479, 46748, 49972, 53940, 55738, 57660, 58435, 62465, 70122, 74958, 83607, 111476, 116870, 124930, 139345, 140244, 149916, 167214, 175305, 187395, 233740, 249860, 278690, 334428, 350610, 362297, 374790, 418035, 557380, 701220, 724594, 749580, 836070, 1086891, 1449188, 1672140, 1811485, 2173782, 3622970, 4347564, 5434455, 7245940, 10868910, 21737820]

約数ペア:

[(1, 21737820), (2, 10868910), (3, 7245940), (4, 5434455), (5, 4347564), (6, 3622970), (10, 2173782), (12, 1811485), (13, 1672140), (15, 1449188), (20, 1086891), (26, 836070), (29, 749580), (30, 724594), (31, 701220), (39, 557380), (52, 418035), (58, 374790), (60, 362297), (62, 350610), (65, 334428), (78, 278690), (87, 249860), (93, 233740), (116, 187395), (124, 175305), (130, 167214), (145, 149916), (155, 140244), (156, 139345), (174, 124930), (186, 116870), (195, 111476), (260, 83607), (290, 74958), (310, 70122), (348, 62465), (372, 58435), (377, 57660), (390, 55738), (403, 53940), (435, 49972), (465, 46748), (580, 37479), (620, 35061), (754, 28830), (780, 27869), (806, 26970), (870, 24986), (899, 24180), (930, 23374), (961, 22620), (1131, 19220), (1209, 17980), (1508, 14415), (1612, 13485), (1740, 12493), (1798, 12090), (1860, 11687), (1885, 11532), (1922, 11310), (2015, 10788), (2262, 9610), (2418, 8990), (2697, 8060), (2883, 7540), (3596, 6045), (3770, 5766), (3844, 5655), (4030, 5394), (4495, 4836), (4524, 4805)]