20420490

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{59}}^1\times {\mathrm{83}}^1\times {\mathrm{139}}^1$

素因数の和:291

約数の個数: 64

約数和(自身を含む): 50803200

約数和(自身を除く): 30382710

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 59, 83, 118, 139, 166, 177, 249, 278, 295, 354, 415, 417, 498, 590, 695, 830, 834, 885, 1245, 1390, 1770, 2085, 2490, 4170, 4897, 8201, 9794, 11537, 14691, 16402, 23074, 24485, 24603, 29382, 34611, 41005, 48970, 49206, 57685, 69222, 73455, 82010, 115370, 123015, 146910, 173055, 246030, 346110, 680683, 1361366, 2042049, 3403415, 4084098, 6806830, 10210245, 20420490]

約数ペア:

[(1, 20420490), (2, 10210245), (3, 6806830), (5, 4084098), (6, 3403415), (10, 2042049), (15, 1361366), (30, 680683), (59, 346110), (83, 246030), (118, 173055), (139, 146910), (166, 123015), (177, 115370), (249, 82010), (278, 73455), (295, 69222), (354, 57685), (415, 49206), (417, 48970), (498, 41005), (590, 34611), (695, 29382), (830, 24603), (834, 24485), (885, 23074), (1245, 16402), (1390, 14691), (1770, 11537), (2085, 9794), (2490, 8201), (4170, 4897)]