31486725

素因数分解:

$3^5\times 5^2\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:169

約数の個数: 72

約数和(自身を含む): 60121152

約数和(自身を除く): 28634427

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 71, 73, 75, 81, 135, 213, 219, 225, 243, 355, 365, 405, 639, 657, 675, 1065, 1095, 1215, 1775, 1825, 1917, 1971, 2025, 3195, 3285, 5183, 5325, 5475, 5751, 5913, 6075, 9585, 9855, 15549, 15975, 16425, 17253, 17739, 25915, 28755, 29565, 46647, 47925, 49275, 77745, 86265, 88695, 129575, 139941, 143775, 147825, 233235, 388725, 419823, 431325, 443475, 699705, 1166175, 1259469, 2099115, 3498525, 6297345, 10495575, 31486725]

約数ペア:

[(1, 31486725), (3, 10495575), (5, 6297345), (9, 3498525), (15, 2099115), (25, 1259469), (27, 1166175), (45, 699705), (71, 443475), (73, 431325), (75, 419823), (81, 388725), (135, 233235), (213, 147825), (219, 143775), (225, 139941), (243, 129575), (355, 88695), (365, 86265), (405, 77745), (639, 49275), (657, 47925), (675, 46647), (1065, 29565), (1095, 28755), (1215, 25915), (1775, 17739), (1825, 17253), (1917, 16425), (1971, 15975), (2025, 15549), (3195, 9855), (3285, 9585), (5183, 6075), (5325, 5913), (5475, 5751)]