640279668

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{17851}}^1$

素因数の和:17933

約数の個数: 72

約数和(自身を含む): 1766491104

約数和(自身を除く): 1126211436

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 61, 84, 98, 122, 147, 183, 196, 244, 294, 366, 427, 588, 732, 854, 1281, 1708, 2562, 2989, 5124, 5978, 8967, 11956, 17851, 17934, 35702, 35868, 53553, 71404, 107106, 124957, 214212, 249914, 374871, 499828, 749742, 874699, 1088911, 1499484, 1749398, 2177822, 2624097, 3266733, 3498796, 4355644, 5248194, 6533466, 7622377, 10496388, 13066932, 15244754, 22867131, 30489508, 45734262, 53356639, 91468524, 106713278, 160069917, 213426556, 320139834, 640279668]

約数ペア:

[(1, 640279668), (2, 320139834), (3, 213426556), (4, 160069917), (6, 106713278), (7, 91468524), (12, 53356639), (14, 45734262), (21, 30489508), (28, 22867131), (42, 15244754), (49, 13066932), (61, 10496388), (84, 7622377), (98, 6533466), (122, 5248194), (147, 4355644), (183, 3498796), (196, 3266733), (244, 2624097), (294, 2177822), (366, 1749398), (427, 1499484), (588, 1088911), (732, 874699), (854, 749742), (1281, 499828), (1708, 374871), (2562, 249914), (2989, 214212), (5124, 124957), (5978, 107106), (8967, 71404), (11956, 53553), (17851, 35868), (17934, 35702)]