21985844

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{149}}^1\times {\mathrm{997}}^1$

素因数の和:1187

約数の個数: 24

約数和(自身を含む): 39820200

約数和(自身を除く): 17834356

約数列:

[1, 2, 4, 37, 74, 148, 149, 298, 596, 997, 1994, 3988, 5513, 11026, 22052, 36889, 73778, 147556, 148553, 297106, 594212, 5496461, 10992922, 21985844]

約数ペア:

[(1, 21985844), (2, 10992922), (4, 5496461), (37, 594212), (74, 297106), (148, 148553), (149, 147556), (298, 73778), (596, 36889), (997, 22052), (1994, 11026), (3988, 5513)]