19696280

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{271}}^1$

素因数の和:384

約数の個数: 64

約数和(自身を含む): 47001600

約数和(自身を除く): 27305320

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 79, 92, 115, 158, 184, 230, 271, 316, 395, 460, 542, 632, 790, 920, 1084, 1355, 1580, 1817, 2168, 2710, 3160, 3634, 5420, 6233, 7268, 9085, 10840, 12466, 14536, 18170, 21409, 24932, 31165, 36340, 42818, 49864, 62330, 72680, 85636, 107045, 124660, 171272, 214090, 249320, 428180, 492407, 856360, 984814, 1969628, 2462035, 3939256, 4924070, 9848140, 19696280]

約数ペア:

[(1, 19696280), (2, 9848140), (4, 4924070), (5, 3939256), (8, 2462035), (10, 1969628), (20, 984814), (23, 856360), (40, 492407), (46, 428180), (79, 249320), (92, 214090), (115, 171272), (158, 124660), (184, 107045), (230, 85636), (271, 72680), (316, 62330), (395, 49864), (460, 42818), (542, 36340), (632, 31165), (790, 24932), (920, 21409), (1084, 18170), (1355, 14536), (1580, 12466), (1817, 10840), (2168, 9085), (2710, 7268), (3160, 6233), (3634, 5420)]