21991230

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1031}}^1$

素因数の和:1126

約数の個数: 64

約数和(自身を含む): 59443200

約数和(自身を除く): 37451970

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 79, 90, 135, 158, 237, 270, 395, 474, 711, 790, 1031, 1185, 1422, 2062, 2133, 2370, 3093, 3555, 4266, 5155, 6186, 7110, 9279, 10310, 10665, 15465, 18558, 21330, 27837, 30930, 46395, 55674, 81449, 92790, 139185, 162898, 244347, 278370, 407245, 488694, 733041, 814490, 1221735, 1466082, 2199123, 2443470, 3665205, 4398246, 7330410, 10995615, 21991230]

約数ペア:

[(1, 21991230), (2, 10995615), (3, 7330410), (5, 4398246), (6, 3665205), (9, 2443470), (10, 2199123), (15, 1466082), (18, 1221735), (27, 814490), (30, 733041), (45, 488694), (54, 407245), (79, 278370), (90, 244347), (135, 162898), (158, 139185), (237, 92790), (270, 81449), (395, 55674), (474, 46395), (711, 30930), (790, 27837), (1031, 21330), (1185, 18558), (1422, 15465), (2062, 10665), (2133, 10310), (2370, 9279), (3093, 7110), (3555, 6186), (4266, 5155)]