21049301

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{113}}^1$

素因数の和:245

約数の個数: 32

約数和(自身を含む): 27578880

約数和(自身を除く): 6529579

約数列:

[1, 7, 13, 23, 89, 91, 113, 161, 299, 623, 791, 1157, 1469, 2047, 2093, 2599, 8099, 10057, 10283, 14329, 18193, 26611, 33787, 70399, 130741, 186277, 231311, 236509, 915187, 1619177, 3007043, 21049301]

約数ペア:

[(1, 21049301), (7, 3007043), (13, 1619177), (23, 915187), (89, 236509), (91, 231311), (113, 186277), (161, 130741), (299, 70399), (623, 33787), (791, 26611), (1157, 18193), (1469, 14329), (2047, 10283), (2093, 10057), (2599, 8099)]