21974360

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{13399}}^1$

素因数の和:13451

約数の個数: 32

約数和(自身を含む): 50652000

約数和(自身を除く): 28677640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 13399, 26798, 53596, 66995, 107192, 133990, 267980, 535960, 549359, 1098718, 2197436, 2746795, 4394872, 5493590, 10987180, 21974360]

約数ペア:

[(1, 21974360), (2, 10987180), (4, 5493590), (5, 4394872), (8, 2746795), (10, 2197436), (20, 1098718), (40, 549359), (41, 535960), (82, 267980), (164, 133990), (205, 107192), (328, 66995), (410, 53596), (820, 26798), (1640, 13399)]