21292635

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{821}}^1$

素因数の和:868

約数の個数: 64

約数和(自身を含む): 44190720

約数和(自身を除く): 22898085

約数列:

[1, 3, 5, 7, 13, 15, 19, 21, 35, 39, 57, 65, 91, 95, 105, 133, 195, 247, 273, 285, 399, 455, 665, 741, 821, 1235, 1365, 1729, 1995, 2463, 3705, 4105, 5187, 5747, 8645, 10673, 12315, 15599, 17241, 25935, 28735, 32019, 46797, 53365, 74711, 77995, 86205, 109193, 160095, 202787, 224133, 233985, 327579, 373555, 545965, 608361, 1013935, 1120665, 1419509, 1637895, 3041805, 4258527, 7097545, 21292635]

約数ペア:

[(1, 21292635), (3, 7097545), (5, 4258527), (7, 3041805), (13, 1637895), (15, 1419509), (19, 1120665), (21, 1013935), (35, 608361), (39, 545965), (57, 373555), (65, 327579), (91, 233985), (95, 224133), (105, 202787), (133, 160095), (195, 109193), (247, 86205), (273, 77995), (285, 74711), (399, 53365), (455, 46797), (665, 32019), (741, 28735), (821, 25935), (1235, 17241), (1365, 15599), (1729, 12315), (1995, 10673), (2463, 8645), (3705, 5747), (4105, 5187)]