21940204

素因数分解:

$2^2\times {\mathrm{11}}^3\times {\mathrm{13}}^1\times {\mathrm{317}}^1$

素因数の和:367

約数の個数: 48

約数和(自身を含む): 45624096

約数和(自身を除く): 23683892

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 121, 143, 242, 286, 317, 484, 572, 634, 1268, 1331, 1573, 2662, 3146, 3487, 4121, 5324, 6292, 6974, 8242, 13948, 16484, 17303, 34606, 38357, 45331, 69212, 76714, 90662, 153428, 181324, 421927, 498641, 843854, 997282, 1687708, 1994564, 5485051, 10970102, 21940204]

約数ペア:

[(1, 21940204), (2, 10970102), (4, 5485051), (11, 1994564), (13, 1687708), (22, 997282), (26, 843854), (44, 498641), (52, 421927), (121, 181324), (143, 153428), (242, 90662), (286, 76714), (317, 69212), (484, 45331), (572, 38357), (634, 34606), (1268, 17303), (1331, 16484), (1573, 13948), (2662, 8242), (3146, 6974), (3487, 6292), (4121, 5324)]