20784900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{79}}^1\times {\mathrm{877}}^1$

素因数の和:973

約数の個数: 72

約数和(自身を含む): 60968320

約数和(自身を除く): 40183420

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 79, 100, 150, 158, 237, 300, 316, 395, 474, 790, 877, 948, 1185, 1580, 1754, 1975, 2370, 2631, 3508, 3950, 4385, 4740, 5262, 5925, 7900, 8770, 10524, 11850, 13155, 17540, 21925, 23700, 26310, 43850, 52620, 65775, 69283, 87700, 131550, 138566, 207849, 263100, 277132, 346415, 415698, 692830, 831396, 1039245, 1385660, 1732075, 2078490, 3464150, 4156980, 5196225, 6928300, 10392450, 20784900]

約数ペア:

[(1, 20784900), (2, 10392450), (3, 6928300), (4, 5196225), (5, 4156980), (6, 3464150), (10, 2078490), (12, 1732075), (15, 1385660), (20, 1039245), (25, 831396), (30, 692830), (50, 415698), (60, 346415), (75, 277132), (79, 263100), (100, 207849), (150, 138566), (158, 131550), (237, 87700), (300, 69283), (316, 65775), (395, 52620), (474, 43850), (790, 26310), (877, 23700), (948, 21925), (1185, 17540), (1580, 13155), (1754, 11850), (1975, 10524), (2370, 8770), (2631, 7900), (3508, 5925), (3950, 5262), (4385, 4740)]