20091420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^2\times {\mathrm{211}}^1$

素因数の和:272

約数の個数: 108

約数和(自身を含む): 64010856

約数和(自身を除く): 43919436

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 90, 92, 115, 138, 180, 207, 211, 230, 276, 345, 414, 422, 460, 529, 633, 690, 828, 844, 1035, 1055, 1058, 1266, 1380, 1587, 1899, 2070, 2110, 2116, 2532, 2645, 3165, 3174, 3798, 4140, 4220, 4761, 4853, 5290, 6330, 6348, 7596, 7935, 9495, 9522, 9706, 10580, 12660, 14559, 15870, 18990, 19044, 19412, 23805, 24265, 29118, 31740, 37980, 43677, 47610, 48530, 58236, 72795, 87354, 95220, 97060, 111619, 145590, 174708, 218385, 223238, 291180, 334857, 436770, 446476, 558095, 669714, 873540, 1004571, 1116190, 1339428, 1674285, 2009142, 2232380, 3348570, 4018284, 5022855, 6697140, 10045710, 20091420]

約数ペア:

[(1, 20091420), (2, 10045710), (3, 6697140), (4, 5022855), (5, 4018284), (6, 3348570), (9, 2232380), (10, 2009142), (12, 1674285), (15, 1339428), (18, 1116190), (20, 1004571), (23, 873540), (30, 669714), (36, 558095), (45, 446476), (46, 436770), (60, 334857), (69, 291180), (90, 223238), (92, 218385), (115, 174708), (138, 145590), (180, 111619), (207, 97060), (211, 95220), (230, 87354), (276, 72795), (345, 58236), (414, 48530), (422, 47610), (460, 43677), (529, 37980), (633, 31740), (690, 29118), (828, 24265), (844, 23805), (1035, 19412), (1055, 19044), (1058, 18990), (1266, 15870), (1380, 14559), (1587, 12660), (1899, 10580), (2070, 9706), (2110, 9522), (2116, 9495), (2532, 7935), (2645, 7596), (3165, 6348), (3174, 6330), (3798, 5290), (4140, 4853), (4220, 4761)]