28261272

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{379}}^1$

素因数の和:640

約数の個数: 64

約数和(自身を含む): 76608000

約数和(自身を除く): 48346728

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 239, 312, 379, 478, 717, 758, 956, 1137, 1434, 1516, 1912, 2274, 2868, 3032, 3107, 4548, 4927, 5736, 6214, 9096, 9321, 9854, 12428, 14781, 18642, 19708, 24856, 29562, 37284, 39416, 59124, 74568, 90581, 118248, 181162, 271743, 362324, 543486, 724648, 1086972, 1177553, 2173944, 2355106, 3532659, 4710212, 7065318, 9420424, 14130636, 28261272]

約数ペア:

[(1, 28261272), (2, 14130636), (3, 9420424), (4, 7065318), (6, 4710212), (8, 3532659), (12, 2355106), (13, 2173944), (24, 1177553), (26, 1086972), (39, 724648), (52, 543486), (78, 362324), (104, 271743), (156, 181162), (239, 118248), (312, 90581), (379, 74568), (478, 59124), (717, 39416), (758, 37284), (956, 29562), (1137, 24856), (1434, 19708), (1516, 18642), (1912, 14781), (2274, 12428), (2868, 9854), (3032, 9321), (3107, 9096), (4548, 6214), (4927, 5736)]