19601325

素因数分解:

$3^3\times 5^2\times {\mathrm{71}}^1\times {\mathrm{409}}^1$

素因数の和:499

約数の個数: 48

約数和(自身を含む): 36604800

約数和(自身を除く): 17003475

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 71, 75, 135, 213, 225, 355, 409, 639, 675, 1065, 1227, 1775, 1917, 2045, 3195, 3681, 5325, 6135, 9585, 10225, 11043, 15975, 18405, 29039, 30675, 47925, 55215, 87117, 92025, 145195, 261351, 276075, 435585, 725975, 784053, 1306755, 2177925, 3920265, 6533775, 19601325]

約数ペア:

[(1, 19601325), (3, 6533775), (5, 3920265), (9, 2177925), (15, 1306755), (25, 784053), (27, 725975), (45, 435585), (71, 276075), (75, 261351), (135, 145195), (213, 92025), (225, 87117), (355, 55215), (409, 47925), (639, 30675), (675, 29039), (1065, 18405), (1227, 15975), (1775, 11043), (1917, 10225), (2045, 9585), (3195, 6135), (3681, 5325)]