648123720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{661}}^1\times {\mathrm{8171}}^1$

素因数の和:8846

約数の個数: 64

約数和(自身を含む): 1947551040

約数和(自身を除く): 1299427320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 661, 1322, 1983, 2644, 3305, 3966, 5288, 6610, 7932, 8171, 9915, 13220, 15864, 16342, 19830, 24513, 26440, 32684, 39660, 40855, 49026, 65368, 79320, 81710, 98052, 122565, 163420, 196104, 245130, 326840, 490260, 980520, 5401031, 10802062, 16203093, 21604124, 27005155, 32406186, 43208248, 54010310, 64812372, 81015465, 108020620, 129624744, 162030930, 216041240, 324061860, 648123720]

約数ペア:

[(1, 648123720), (2, 324061860), (3, 216041240), (4, 162030930), (5, 129624744), (6, 108020620), (8, 81015465), (10, 64812372), (12, 54010310), (15, 43208248), (20, 32406186), (24, 27005155), (30, 21604124), (40, 16203093), (60, 10802062), (120, 5401031), (661, 980520), (1322, 490260), (1983, 326840), (2644, 245130), (3305, 196104), (3966, 163420), (5288, 122565), (6610, 98052), (7932, 81710), (8171, 79320), (9915, 65368), (13220, 49026), (15864, 40855), (16342, 39660), (19830, 32684), (24513, 26440)]