20183080

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{443}}^1$

素因数の和:538

約数の個数: 64

約数和(自身を含む): 48911040

約数和(自身を除く): 28727960

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 67, 68, 85, 134, 136, 170, 268, 335, 340, 443, 536, 670, 680, 886, 1139, 1340, 1772, 2215, 2278, 2680, 3544, 4430, 4556, 5695, 7531, 8860, 9112, 11390, 15062, 17720, 22780, 29681, 30124, 37655, 45560, 59362, 60248, 75310, 118724, 148405, 150620, 237448, 296810, 301240, 504577, 593620, 1009154, 1187240, 2018308, 2522885, 4036616, 5045770, 10091540, 20183080]

約数ペア:

[(1, 20183080), (2, 10091540), (4, 5045770), (5, 4036616), (8, 2522885), (10, 2018308), (17, 1187240), (20, 1009154), (34, 593620), (40, 504577), (67, 301240), (68, 296810), (85, 237448), (134, 150620), (136, 148405), (170, 118724), (268, 75310), (335, 60248), (340, 59362), (443, 45560), (536, 37655), (670, 30124), (680, 29681), (886, 22780), (1139, 17720), (1340, 15062), (1772, 11390), (2215, 9112), (2278, 8860), (2680, 7531), (3544, 5695), (4430, 4556)]