19891404

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2237}}^1$

素因数の和:2279

約数の個数: 72

約数和(自身を含む): 57024240

約数和(自身を除く): 37132836

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 19, 26, 36, 38, 39, 52, 57, 76, 78, 114, 117, 156, 171, 228, 234, 247, 342, 468, 494, 684, 741, 988, 1482, 2223, 2237, 2964, 4446, 4474, 6711, 8892, 8948, 13422, 20133, 26844, 29081, 40266, 42503, 58162, 80532, 85006, 87243, 116324, 127509, 170012, 174486, 255018, 261729, 348972, 382527, 510036, 523458, 552539, 765054, 1046916, 1105078, 1530108, 1657617, 2210156, 3315234, 4972851, 6630468, 9945702, 19891404]

約数ペア:

[(1, 19891404), (2, 9945702), (3, 6630468), (4, 4972851), (6, 3315234), (9, 2210156), (12, 1657617), (13, 1530108), (18, 1105078), (19, 1046916), (26, 765054), (36, 552539), (38, 523458), (39, 510036), (52, 382527), (57, 348972), (76, 261729), (78, 255018), (114, 174486), (117, 170012), (156, 127509), (171, 116324), (228, 87243), (234, 85006), (247, 80532), (342, 58162), (468, 42503), (494, 40266), (684, 29081), (741, 26844), (988, 20133), (1482, 13422), (2223, 8948), (2237, 8892), (2964, 6711), (4446, 4474)]