1900533640

素因数分解:

$2^3\times 5^1\times {\mathrm{661}}^1\times {\mathrm{71881}}^1$

素因数の和:72553

約数の個数: 32

約数和(自身を含む): 4282729560

約数和(自身を除く): 2382195920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 661, 1322, 2644, 3305, 5288, 6610, 13220, 26440, 71881, 143762, 287524, 359405, 575048, 718810, 1437620, 2875240, 47513341, 95026682, 190053364, 237566705, 380106728, 475133410, 950266820, 1900533640]

約数ペア:

[(1, 1900533640), (2, 950266820), (4, 475133410), (5, 380106728), (8, 237566705), (10, 190053364), (20, 95026682), (40, 47513341), (661, 2875240), (1322, 1437620), (2644, 718810), (3305, 575048), (5288, 359405), (6610, 287524), (13220, 143762), (26440, 71881)]