20198440

素因数分解:

$2^3\times 5^1\times {\mathrm{149}}^1\times {\mathrm{3389}}^1$

素因数の和:3549

約数の個数: 32

約数和(自身を含む): 45765000

約数和(自身を除く): 25566560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 149, 298, 596, 745, 1192, 1490, 2980, 3389, 5960, 6778, 13556, 16945, 27112, 33890, 67780, 135560, 504961, 1009922, 2019844, 2524805, 4039688, 5049610, 10099220, 20198440]

約数ペア:

[(1, 20198440), (2, 10099220), (4, 5049610), (5, 4039688), (8, 2524805), (10, 2019844), (20, 1009922), (40, 504961), (149, 135560), (298, 67780), (596, 33890), (745, 27112), (1192, 16945), (1490, 13556), (2980, 6778), (3389, 5960)]