21007790495

素因数分解:

$5^1\times {\mathrm{173}}^1\times {\mathrm{239}}^1\times {\mathrm{307}}^1\times {\mathrm{331}}^1$

素因数の和:1055

約数の個数: 32

約数和(自身を含む): 25621263360

約数和(自身を除く): 4613472865

約数列:

[1, 5, 173, 239, 307, 331, 865, 1195, 1535, 1655, 41347, 53111, 57263, 73373, 79109, 101617, 206735, 265555, 286315, 366865, 395545, 508085, 12693529, 13685857, 17579741, 24286463, 63467645, 68429285, 87898705, 121432315, 4201558099, 21007790495]

約数ペア:

[(1, 21007790495), (5, 4201558099), (173, 121432315), (239, 87898705), (307, 68429285), (331, 63467645), (865, 24286463), (1195, 17579741), (1535, 13685857), (1655, 12693529), (41347, 508085), (53111, 395545), (57263, 366865), (73373, 286315), (79109, 265555), (101617, 206735)]