21652780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{2999}}^1$

素因数の和:3046

約数の個数: 36

約数和(自身を含む): 48006000

約数和(自身を除く): 26353220

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1805, 2999, 3610, 5998, 7220, 11996, 14995, 29990, 56981, 59980, 113962, 227924, 284905, 569810, 1082639, 1139620, 2165278, 4330556, 5413195, 10826390, 21652780]

約数ペア:

[(1, 21652780), (2, 10826390), (4, 5413195), (5, 4330556), (10, 2165278), (19, 1139620), (20, 1082639), (38, 569810), (76, 284905), (95, 227924), (190, 113962), (361, 59980), (380, 56981), (722, 29990), (1444, 14995), (1805, 11996), (2999, 7220), (3610, 5998)]