20219020

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{307}}^1$

素因数の和:442

約数の個数: 48

約数和(自身を含む): 44241120

約数和(自身を除く): 24022100

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 89, 148, 178, 185, 307, 356, 370, 445, 614, 740, 890, 1228, 1535, 1780, 3070, 3293, 6140, 6586, 11359, 13172, 16465, 22718, 27323, 32930, 45436, 54646, 56795, 65860, 109292, 113590, 136615, 227180, 273230, 546460, 1010951, 2021902, 4043804, 5054755, 10109510, 20219020]

約数ペア:

[(1, 20219020), (2, 10109510), (4, 5054755), (5, 4043804), (10, 2021902), (20, 1010951), (37, 546460), (74, 273230), (89, 227180), (148, 136615), (178, 113590), (185, 109292), (307, 65860), (356, 56795), (370, 54646), (445, 45436), (614, 32930), (740, 27323), (890, 22718), (1228, 16465), (1535, 13172), (1780, 11359), (3070, 6586), (3293, 6140)]