21255318

素因数分解:

$2^1\times 3^3\times 7^2\times {\mathrm{29}}^1\times {\mathrm{277}}^1$

素因数の和:331

約数の個数: 96

約数和(自身を含む): 57045600

約数和(自身を除く): 35790282

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 29, 42, 49, 54, 58, 63, 87, 98, 126, 147, 174, 189, 203, 261, 277, 294, 378, 406, 441, 522, 554, 609, 783, 831, 882, 1218, 1323, 1421, 1566, 1662, 1827, 1939, 2493, 2646, 2842, 3654, 3878, 4263, 4986, 5481, 5817, 7479, 8033, 8526, 10962, 11634, 12789, 13573, 14958, 16066, 17451, 24099, 25578, 27146, 34902, 38367, 40719, 48198, 52353, 56231, 72297, 76734, 81438, 104706, 112462, 122157, 144594, 168693, 216891, 244314, 337386, 366471, 393617, 433782, 506079, 732942, 787234, 1012158, 1180851, 1518237, 2361702, 3036474, 3542553, 7085106, 10627659, 21255318]

約数ペア:

[(1, 21255318), (2, 10627659), (3, 7085106), (6, 3542553), (7, 3036474), (9, 2361702), (14, 1518237), (18, 1180851), (21, 1012158), (27, 787234), (29, 732942), (42, 506079), (49, 433782), (54, 393617), (58, 366471), (63, 337386), (87, 244314), (98, 216891), (126, 168693), (147, 144594), (174, 122157), (189, 112462), (203, 104706), (261, 81438), (277, 76734), (294, 72297), (378, 56231), (406, 52353), (441, 48198), (522, 40719), (554, 38367), (609, 34902), (783, 27146), (831, 25578), (882, 24099), (1218, 17451), (1323, 16066), (1421, 14958), (1566, 13573), (1662, 12789), (1827, 11634), (1939, 10962), (2493, 8526), (2646, 8033), (2842, 7479), (3654, 5817), (3878, 5481), (4263, 4986)]