20212400

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^3\times {\mathrm{23}}^1$

素因数の和:80

約数の個数: 120

約数和(自身を含む): 54892320

約数和(自身を除く): 34679920

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 25, 26, 40, 46, 50, 52, 65, 80, 92, 100, 104, 115, 130, 169, 184, 200, 208, 230, 260, 299, 325, 338, 368, 400, 460, 520, 575, 598, 650, 676, 845, 920, 1040, 1150, 1196, 1300, 1352, 1495, 1690, 1840, 2197, 2300, 2392, 2600, 2704, 2990, 3380, 3887, 4225, 4394, 4600, 4784, 5200, 5980, 6760, 7475, 7774, 8450, 8788, 9200, 10985, 11960, 13520, 14950, 15548, 16900, 17576, 19435, 21970, 23920, 29900, 31096, 33800, 35152, 38870, 43940, 50531, 54925, 59800, 62192, 67600, 77740, 87880, 97175, 101062, 109850, 119600, 155480, 175760, 194350, 202124, 219700, 252655, 310960, 388700, 404248, 439400, 505310, 777400, 808496, 878800, 1010620, 1263275, 1554800, 2021240, 2526550, 4042480, 5053100, 10106200, 20212400]

約数ペア:

[(1, 20212400), (2, 10106200), (4, 5053100), (5, 4042480), (8, 2526550), (10, 2021240), (13, 1554800), (16, 1263275), (20, 1010620), (23, 878800), (25, 808496), (26, 777400), (40, 505310), (46, 439400), (50, 404248), (52, 388700), (65, 310960), (80, 252655), (92, 219700), (100, 202124), (104, 194350), (115, 175760), (130, 155480), (169, 119600), (184, 109850), (200, 101062), (208, 97175), (230, 87880), (260, 77740), (299, 67600), (325, 62192), (338, 59800), (368, 54925), (400, 50531), (460, 43940), (520, 38870), (575, 35152), (598, 33800), (650, 31096), (676, 29900), (845, 23920), (920, 21970), (1040, 19435), (1150, 17576), (1196, 16900), (1300, 15548), (1352, 14950), (1495, 13520), (1690, 11960), (1840, 10985), (2197, 9200), (2300, 8788), (2392, 8450), (2600, 7774), (2704, 7475), (2990, 6760), (3380, 5980), (3887, 5200), (4225, 4784), (4394, 4600)]