20212940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{1163}}^1$

素因数の和:1262

約数の個数: 48

約数和(自身を含む): 46932480

約数和(自身を除く): 26719540

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 79, 110, 158, 220, 316, 395, 790, 869, 1163, 1580, 1738, 2326, 3476, 4345, 4652, 5815, 8690, 11630, 12793, 17380, 23260, 25586, 51172, 63965, 91877, 127930, 183754, 255860, 367508, 459385, 918770, 1010647, 1837540, 2021294, 4042588, 5053235, 10106470, 20212940]

約数ペア:

[(1, 20212940), (2, 10106470), (4, 5053235), (5, 4042588), (10, 2021294), (11, 1837540), (20, 1010647), (22, 918770), (44, 459385), (55, 367508), (79, 255860), (110, 183754), (158, 127930), (220, 91877), (316, 63965), (395, 51172), (790, 25586), (869, 23260), (1163, 17380), (1580, 12793), (1738, 11630), (2326, 8690), (3476, 5815), (4345, 4652)]