21387972

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{1777}}^1$

素因数の和:1860

約数の個数: 48

約数和(自身を含む): 53766720

約数和(自身を除く): 32378748

約数列:

[1, 2, 3, 4, 6, 12, 17, 34, 51, 59, 68, 102, 118, 177, 204, 236, 354, 708, 1003, 1777, 2006, 3009, 3554, 4012, 5331, 6018, 7108, 10662, 12036, 21324, 30209, 60418, 90627, 104843, 120836, 181254, 209686, 314529, 362508, 419372, 629058, 1258116, 1782331, 3564662, 5346993, 7129324, 10693986, 21387972]

約数ペア:

[(1, 21387972), (2, 10693986), (3, 7129324), (4, 5346993), (6, 3564662), (12, 1782331), (17, 1258116), (34, 629058), (51, 419372), (59, 362508), (68, 314529), (102, 209686), (118, 181254), (177, 120836), (204, 104843), (236, 90627), (354, 60418), (708, 30209), (1003, 21324), (1777, 12036), (2006, 10662), (3009, 7108), (3554, 6018), (4012, 5331)]