198517120

素因数分解:

$2^7\times 5^1\times {\mathrm{313}}^1\times {\mathrm{991}}^1$

素因数の和:1323

約数の個数: 64

約数和(自身を含む): 476576640

約数和(自身を除く): 278059520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 313, 320, 626, 640, 991, 1252, 1565, 1982, 2504, 3130, 3964, 4955, 5008, 6260, 7928, 9910, 10016, 12520, 15856, 19820, 20032, 25040, 31712, 39640, 40064, 50080, 63424, 79280, 100160, 126848, 158560, 200320, 310183, 317120, 620366, 634240, 1240732, 1550915, 2481464, 3101830, 4962928, 6203660, 9925856, 12407320, 19851712, 24814640, 39703424, 49629280, 99258560, 198517120]

約数ペア:

[(1, 198517120), (2, 99258560), (4, 49629280), (5, 39703424), (8, 24814640), (10, 19851712), (16, 12407320), (20, 9925856), (32, 6203660), (40, 4962928), (64, 3101830), (80, 2481464), (128, 1550915), (160, 1240732), (313, 634240), (320, 620366), (626, 317120), (640, 310183), (991, 200320), (1252, 158560), (1565, 126848), (1982, 100160), (2504, 79280), (3130, 63424), (3964, 50080), (4955, 40064), (5008, 39640), (6260, 31712), (7928, 25040), (9910, 20032), (10016, 19820), (12520, 15856)]