20820930

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{271}}^1$

素因数の和:491

約数の個数: 64

約数和(自身を含む): 54286848

約数和(自身を除く): 33465918

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 197, 271, 390, 394, 542, 591, 813, 985, 1182, 1355, 1626, 1970, 2561, 2710, 2955, 3523, 4065, 5122, 5910, 7046, 7683, 8130, 10569, 12805, 15366, 17615, 21138, 25610, 35230, 38415, 52845, 53387, 76830, 105690, 106774, 160161, 266935, 320322, 533870, 694031, 800805, 1388062, 1601610, 2082093, 3470155, 4164186, 6940310, 10410465, 20820930]

約数ペア:

[(1, 20820930), (2, 10410465), (3, 6940310), (5, 4164186), (6, 3470155), (10, 2082093), (13, 1601610), (15, 1388062), (26, 800805), (30, 694031), (39, 533870), (65, 320322), (78, 266935), (130, 160161), (195, 106774), (197, 105690), (271, 76830), (390, 53387), (394, 52845), (542, 38415), (591, 35230), (813, 25610), (985, 21138), (1182, 17615), (1355, 15366), (1626, 12805), (1970, 10569), (2561, 8130), (2710, 7683), (2955, 7046), (3523, 5910), (4065, 5122)]