21083660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{977}}^1$

素因数の和:1082

約数の個数: 48

約数和(自身を含む): 48305376

約数和(自身を除く): 27221716

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 83, 130, 166, 260, 332, 415, 830, 977, 1079, 1660, 1954, 2158, 3908, 4316, 4885, 5395, 9770, 10790, 12701, 19540, 21580, 25402, 50804, 63505, 81091, 127010, 162182, 254020, 324364, 405455, 810910, 1054183, 1621820, 2108366, 4216732, 5270915, 10541830, 21083660]

約数ペア:

[(1, 21083660), (2, 10541830), (4, 5270915), (5, 4216732), (10, 2108366), (13, 1621820), (20, 1054183), (26, 810910), (52, 405455), (65, 324364), (83, 254020), (130, 162182), (166, 127010), (260, 81091), (332, 63505), (415, 50804), (830, 25402), (977, 21580), (1079, 19540), (1660, 12701), (1954, 10790), (2158, 9770), (3908, 5395), (4316, 4885)]