20444540

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{383}}^1$

素因数の和:566

約数の個数: 48

約数和(自身を含む): 45868032

約数和(自身を除く): 25423492

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 157, 170, 314, 340, 383, 628, 766, 785, 1532, 1570, 1915, 2669, 3140, 3830, 5338, 6511, 7660, 10676, 13022, 13345, 26044, 26690, 32555, 53380, 60131, 65110, 120262, 130220, 240524, 300655, 601310, 1022227, 1202620, 2044454, 4088908, 5111135, 10222270, 20444540]

約数ペア:

[(1, 20444540), (2, 10222270), (4, 5111135), (5, 4088908), (10, 2044454), (17, 1202620), (20, 1022227), (34, 601310), (68, 300655), (85, 240524), (157, 130220), (170, 120262), (314, 65110), (340, 60131), (383, 53380), (628, 32555), (766, 26690), (785, 26044), (1532, 13345), (1570, 13022), (1915, 10676), (2669, 7660), (3140, 6511), (3830, 5338)]