21096764

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{163}}^1$

素因数の和:330

約数の個数: 48

約数和(自身を含む): 42430080

約数和(自身を除く): 21333316

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 131, 163, 247, 262, 326, 494, 524, 652, 988, 1703, 2119, 2489, 3097, 3406, 4238, 4978, 6194, 6812, 8476, 9956, 12388, 21353, 32357, 40261, 42706, 64714, 80522, 85412, 129428, 161044, 277589, 405707, 555178, 811414, 1110356, 1622828, 5274191, 10548382, 21096764]

約数ペア:

[(1, 21096764), (2, 10548382), (4, 5274191), (13, 1622828), (19, 1110356), (26, 811414), (38, 555178), (52, 405707), (76, 277589), (131, 161044), (163, 129428), (247, 85412), (262, 80522), (326, 64714), (494, 42706), (524, 40261), (652, 32357), (988, 21353), (1703, 12388), (2119, 9956), (2489, 8476), (3097, 6812), (3406, 6194), (4238, 4978)]