20578160

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{15131}}^1$

素因数の和:15161

約数の個数: 40

約数和(自身を含む): 50661936

約数和(自身を除く): 30083776

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 15131, 30262, 60524, 75655, 121048, 151310, 242096, 257227, 302620, 514454, 605240, 1028908, 1210480, 1286135, 2057816, 2572270, 4115632, 5144540, 10289080, 20578160]

約数ペア:

[(1, 20578160), (2, 10289080), (4, 5144540), (5, 4115632), (8, 2572270), (10, 2057816), (16, 1286135), (17, 1210480), (20, 1028908), (34, 605240), (40, 514454), (68, 302620), (80, 257227), (85, 242096), (136, 151310), (170, 121048), (272, 75655), (340, 60524), (680, 30262), (1360, 15131)]