19399220

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{15901}}^1$

素因数の和:15971

約数の個数: 24

約数和(自身を含む): 41408808

約数和(自身を除く): 22009588

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 15901, 31802, 63604, 79505, 159010, 318020, 969961, 1939922, 3879844, 4849805, 9699610, 19399220]

約数ペア:

[(1, 19399220), (2, 9699610), (4, 4849805), (5, 3879844), (10, 1939922), (20, 969961), (61, 318020), (122, 159010), (244, 79505), (305, 63604), (610, 31802), (1220, 15901)]