20335480

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{409}}^1$

素因数の和:544

約数の個数: 64

約数和(自身を含む): 50479200

約数和(自身を除く): 30143720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 113, 220, 226, 409, 440, 452, 565, 818, 904, 1130, 1243, 1636, 2045, 2260, 2486, 3272, 4090, 4499, 4520, 4972, 6215, 8180, 8998, 9944, 12430, 16360, 17996, 22495, 24860, 35992, 44990, 46217, 49720, 89980, 92434, 179960, 184868, 231085, 369736, 462170, 508387, 924340, 1016774, 1848680, 2033548, 2541935, 4067096, 5083870, 10167740, 20335480]

約数ペア:

[(1, 20335480), (2, 10167740), (4, 5083870), (5, 4067096), (8, 2541935), (10, 2033548), (11, 1848680), (20, 1016774), (22, 924340), (40, 508387), (44, 462170), (55, 369736), (88, 231085), (110, 184868), (113, 179960), (220, 92434), (226, 89980), (409, 49720), (440, 46217), (452, 44990), (565, 35992), (818, 24860), (904, 22495), (1130, 17996), (1243, 16360), (1636, 12430), (2045, 9944), (2260, 8998), (2486, 8180), (3272, 6215), (4090, 4972), (4499, 4520)]