21122470

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{1117}}^1$

素因数の和:1216

約数の個数: 32

約数和(自身を含む): 39926016

約数和(自身を除く): 18803546

約数列:

[1, 2, 5, 10, 31, 61, 62, 122, 155, 305, 310, 610, 1117, 1891, 2234, 3782, 5585, 9455, 11170, 18910, 34627, 68137, 69254, 136274, 173135, 340685, 346270, 681370, 2112247, 4224494, 10561235, 21122470]

約数ペア:

[(1, 21122470), (2, 10561235), (5, 4224494), (10, 2112247), (31, 681370), (61, 346270), (62, 340685), (122, 173135), (155, 136274), (305, 69254), (310, 68137), (610, 34627), (1117, 18910), (1891, 11170), (2234, 9455), (3782, 5585)]