21560890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{7211}}^1$

素因数の和:7254

約数の個数: 32

約数和(自身を含む): 43618176

約数和(自身を除く): 22057286

約数列:

[1, 2, 5, 10, 13, 23, 26, 46, 65, 115, 130, 230, 299, 598, 1495, 2990, 7211, 14422, 36055, 72110, 93743, 165853, 187486, 331706, 468715, 829265, 937430, 1658530, 2156089, 4312178, 10780445, 21560890]

約数ペア:

[(1, 21560890), (2, 10780445), (5, 4312178), (10, 2156089), (13, 1658530), (23, 937430), (26, 829265), (46, 468715), (65, 331706), (115, 187486), (130, 165853), (230, 93743), (299, 72110), (598, 36055), (1495, 14422), (2990, 7211)]