20455812

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{401}}^1$

素因数の和:533

約数の個数: 72

約数和(自身を含む): 56336280

約数和(自身を除く): 35880468

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 109, 117, 156, 218, 234, 327, 401, 436, 468, 654, 802, 981, 1203, 1308, 1417, 1604, 1962, 2406, 2834, 3609, 3924, 4251, 4812, 5213, 5668, 7218, 8502, 10426, 12753, 14436, 15639, 17004, 20852, 25506, 31278, 43709, 46917, 51012, 62556, 87418, 93834, 131127, 174836, 187668, 262254, 393381, 524508, 568217, 786762, 1136434, 1573524, 1704651, 2272868, 3409302, 5113953, 6818604, 10227906, 20455812]

約数ペア:

[(1, 20455812), (2, 10227906), (3, 6818604), (4, 5113953), (6, 3409302), (9, 2272868), (12, 1704651), (13, 1573524), (18, 1136434), (26, 786762), (36, 568217), (39, 524508), (52, 393381), (78, 262254), (109, 187668), (117, 174836), (156, 131127), (218, 93834), (234, 87418), (327, 62556), (401, 51012), (436, 46917), (468, 43709), (654, 31278), (802, 25506), (981, 20852), (1203, 17004), (1308, 15639), (1417, 14436), (1604, 12753), (1962, 10426), (2406, 8502), (2834, 7218), (3609, 5668), (3924, 5213), (4251, 4812)]