21070020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{9491}}^1$

素因数の和:9540

約数の個数: 48

約数和(自身を含む): 60596928

約数和(自身を除く): 39526908

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 37, 60, 74, 111, 148, 185, 222, 370, 444, 555, 740, 1110, 2220, 9491, 18982, 28473, 37964, 47455, 56946, 94910, 113892, 142365, 189820, 284730, 351167, 569460, 702334, 1053501, 1404668, 1755835, 2107002, 3511670, 4214004, 5267505, 7023340, 10535010, 21070020]

約数ペア:

[(1, 21070020), (2, 10535010), (3, 7023340), (4, 5267505), (5, 4214004), (6, 3511670), (10, 2107002), (12, 1755835), (15, 1404668), (20, 1053501), (30, 702334), (37, 569460), (60, 351167), (74, 284730), (111, 189820), (148, 142365), (185, 113892), (222, 94910), (370, 56946), (444, 47455), (555, 37964), (740, 28473), (1110, 18982), (2220, 9491)]