21802220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{877}}^1$

素因数の和:1010

約数の個数: 48

約数和(自身を含む): 50446368

約数和(自身を除く): 28644148

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 113, 220, 226, 452, 565, 877, 1130, 1243, 1754, 2260, 2486, 3508, 4385, 4972, 6215, 8770, 9647, 12430, 17540, 19294, 24860, 38588, 48235, 96470, 99101, 192940, 198202, 396404, 495505, 991010, 1090111, 1982020, 2180222, 4360444, 5450555, 10901110, 21802220]

約数ペア:

[(1, 21802220), (2, 10901110), (4, 5450555), (5, 4360444), (10, 2180222), (11, 1982020), (20, 1090111), (22, 991010), (44, 495505), (55, 396404), (110, 198202), (113, 192940), (220, 99101), (226, 96470), (452, 48235), (565, 38588), (877, 24860), (1130, 19294), (1243, 17540), (1754, 12430), (2260, 9647), (2486, 8770), (3508, 6215), (4385, 4972)]