21509210

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{953}}^1$

素因数の和:1058

約数の個数: 32

約数和(自身を含む): 40457232

約数和(自身を除く): 18948022

約数列:

[1, 2, 5, 10, 37, 61, 74, 122, 185, 305, 370, 610, 953, 1906, 2257, 4514, 4765, 9530, 11285, 22570, 35261, 58133, 70522, 116266, 176305, 290665, 352610, 581330, 2150921, 4301842, 10754605, 21509210]

約数ペア:

[(1, 21509210), (2, 10754605), (5, 4301842), (10, 2150921), (37, 581330), (61, 352610), (74, 290665), (122, 176305), (185, 116266), (305, 70522), (370, 58133), (610, 35261), (953, 22570), (1906, 11285), (2257, 9530), (4514, 4765)]