16680740

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{691}}^1$

素因数の和:788

約数の個数: 48

約数和(自身を含む): 37666944

約数和(自身を除く): 20986204

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 71, 85, 142, 170, 284, 340, 355, 691, 710, 1207, 1382, 1420, 2414, 2764, 3455, 4828, 6035, 6910, 11747, 12070, 13820, 23494, 24140, 46988, 49061, 58735, 98122, 117470, 196244, 234940, 245305, 490610, 834037, 981220, 1668074, 3336148, 4170185, 8340370, 16680740]

約数ペア:

[(1, 16680740), (2, 8340370), (4, 4170185), (5, 3336148), (10, 1668074), (17, 981220), (20, 834037), (34, 490610), (68, 245305), (71, 234940), (85, 196244), (142, 117470), (170, 98122), (284, 58735), (340, 49061), (355, 46988), (691, 24140), (710, 23494), (1207, 13820), (1382, 12070), (1420, 11747), (2414, 6910), (2764, 6035), (3455, 4828)]