21815706725

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{211}}^1\times {\mathrm{1879}}^1$

素因数の和:2202

約数の個数: 48

約数和(自身を含む): 28466749440

約数和(自身を除く): 6651042715

約数列:

[1, 5, 25, 31, 71, 155, 211, 355, 775, 1055, 1775, 1879, 2201, 5275, 6541, 9395, 11005, 14981, 32705, 46975, 55025, 58249, 74905, 133409, 163525, 291245, 374525, 396469, 464411, 667045, 1456225, 1982345, 2322055, 3335225, 4135679, 9911725, 11610275, 12290539, 20678395, 28149299, 61452695, 103391975, 140746495, 307263475, 703732475, 872628269, 4363141345, 21815706725]

約数ペア:

[(1, 21815706725), (5, 4363141345), (25, 872628269), (31, 703732475), (71, 307263475), (155, 140746495), (211, 103391975), (355, 61452695), (775, 28149299), (1055, 20678395), (1775, 12290539), (1879, 11610275), (2201, 9911725), (5275, 4135679), (6541, 3335225), (9395, 2322055), (11005, 1982345), (14981, 1456225), (32705, 667045), (46975, 464411), (55025, 396469), (58249, 374525), (74905, 291245), (133409, 163525)]