20920425

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{277}}^1$

素因数の和:362

約数の個数: 48

約数和(自身を含む): 37229760

約数和(自身を除く): 16309335

約数列:

[1, 3, 5, 15, 19, 25, 53, 57, 75, 95, 159, 265, 277, 285, 475, 795, 831, 1007, 1325, 1385, 1425, 3021, 3975, 4155, 5035, 5263, 6925, 14681, 15105, 15789, 20775, 25175, 26315, 44043, 73405, 75525, 78945, 131575, 220215, 278939, 367025, 394725, 836817, 1101075, 1394695, 4184085, 6973475, 20920425]

約数ペア:

[(1, 20920425), (3, 6973475), (5, 4184085), (15, 1394695), (19, 1101075), (25, 836817), (53, 394725), (57, 367025), (75, 278939), (95, 220215), (159, 131575), (265, 78945), (277, 75525), (285, 73405), (475, 44043), (795, 26315), (831, 25175), (1007, 20775), (1325, 15789), (1385, 15105), (1425, 14681), (3021, 6925), (3975, 5263), (4155, 5035)]