2061280

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{991}}^1$

素因数の和:1019

約数の個数: 48

約数和(自身を含む): 5249664

約数和(自身を除く): 3188384

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 991, 1040, 1982, 2080, 3964, 4955, 7928, 9910, 12883, 15856, 19820, 25766, 31712, 39640, 51532, 64415, 79280, 103064, 128830, 158560, 206128, 257660, 412256, 515320, 1030640, 2061280]

約数ペア:

[(1, 2061280), (2, 1030640), (4, 515320), (5, 412256), (8, 257660), (10, 206128), (13, 158560), (16, 128830), (20, 103064), (26, 79280), (32, 64415), (40, 51532), (52, 39640), (65, 31712), (80, 25766), (104, 19820), (130, 15856), (160, 12883), (208, 9910), (260, 7928), (416, 4955), (520, 3964), (991, 2080), (1040, 1982)]