21000780448

素因数分解:

$2^5\times {\mathrm{251}}^1\times {\mathrm{641}}^1\times {\mathrm{4079}}^1$

素因数の和:4981

約数の個数: 48

約数和(自身を含む): 41584959360

約数和(自身を除く): 20584178912

約数列:

[1, 2, 4, 8, 16, 32, 251, 502, 641, 1004, 1282, 2008, 2564, 4016, 4079, 5128, 8032, 8158, 10256, 16316, 20512, 32632, 65264, 130528, 160891, 321782, 643564, 1023829, 1287128, 2047658, 2574256, 2614639, 4095316, 5148512, 5229278, 8190632, 10458556, 16381264, 20917112, 32762528, 41834224, 83668448, 656274389, 1312548778, 2625097556, 5250195112, 10500390224, 21000780448]

約数ペア:

[(1, 21000780448), (2, 10500390224), (4, 5250195112), (8, 2625097556), (16, 1312548778), (32, 656274389), (251, 83668448), (502, 41834224), (641, 32762528), (1004, 20917112), (1282, 16381264), (2008, 10458556), (2564, 8190632), (4016, 5229278), (4079, 5148512), (5128, 4095316), (8032, 2614639), (8158, 2574256), (10256, 2047658), (16316, 1287128), (20512, 1023829), (32632, 643564), (65264, 321782), (130528, 160891)]