20100915

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{211}}^1$

素因数の和:324

約数の個数: 48

約数和(自身を含む): 36709920

約数和(自身を除く): 16609005

約数列:

[1, 3, 5, 9, 15, 29, 45, 73, 87, 145, 211, 219, 261, 365, 435, 633, 657, 1055, 1095, 1305, 1899, 2117, 3165, 3285, 6119, 6351, 9495, 10585, 15403, 18357, 19053, 30595, 31755, 46209, 55071, 77015, 91785, 95265, 138627, 231045, 275355, 446687, 693135, 1340061, 2233435, 4020183, 6700305, 20100915]

約数ペア:

[(1, 20100915), (3, 6700305), (5, 4020183), (9, 2233435), (15, 1340061), (29, 693135), (45, 446687), (73, 275355), (87, 231045), (145, 138627), (211, 95265), (219, 91785), (261, 77015), (365, 55071), (435, 46209), (633, 31755), (657, 30595), (1055, 19053), (1095, 18357), (1305, 15403), (1899, 10585), (2117, 9495), (3165, 6351), (3285, 6119)]