19659820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{1091}}^1$

素因数の和:1170

約数の個数: 48

約数和(自身を含む): 44579808

約数和(自身を除く): 24919988

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 53, 68, 85, 106, 170, 212, 265, 340, 530, 901, 1060, 1091, 1802, 2182, 3604, 4364, 4505, 5455, 9010, 10910, 18020, 18547, 21820, 37094, 57823, 74188, 92735, 115646, 185470, 231292, 289115, 370940, 578230, 982991, 1156460, 1965982, 3931964, 4914955, 9829910, 19659820]

約数ペア:

[(1, 19659820), (2, 9829910), (4, 4914955), (5, 3931964), (10, 1965982), (17, 1156460), (20, 982991), (34, 578230), (53, 370940), (68, 289115), (85, 231292), (106, 185470), (170, 115646), (212, 92735), (265, 74188), (340, 57823), (530, 37094), (901, 21820), (1060, 18547), (1091, 18020), (1802, 10910), (2182, 9010), (3604, 5455), (4364, 4505)]