18989718188

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{346553}}^1$

素因数の和:346686

約数の個数: 48

約数和(自身を含む): 40366609920

約数和(自身を除く): 21376891732

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 103, 133, 206, 266, 412, 532, 721, 1442, 1957, 2884, 3914, 7828, 13699, 27398, 54796, 346553, 693106, 1386212, 2425871, 4851742, 6584507, 9703484, 13169014, 26338028, 35694959, 46091549, 71389918, 92183098, 142779836, 184366196, 249864713, 499729426, 678204221, 999458852, 1356408442, 2712816884, 4747429547, 9494859094, 18989718188]

約数ペア:

[(1, 18989718188), (2, 9494859094), (4, 4747429547), (7, 2712816884), (14, 1356408442), (19, 999458852), (28, 678204221), (38, 499729426), (76, 249864713), (103, 184366196), (133, 142779836), (206, 92183098), (266, 71389918), (412, 46091549), (532, 35694959), (721, 26338028), (1442, 13169014), (1957, 9703484), (2884, 6584507), (3914, 4851742), (7828, 2425871), (13699, 1386212), (27398, 693106), (54796, 346553)]