20348320

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{7481}}^1$

素因数の和:7513

約数の個数: 48

約数和(自身を含む): 50907528

約数和(自身を除く): 30559208

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 7481, 14962, 29924, 37405, 59848, 74810, 119696, 127177, 149620, 239392, 254354, 299240, 508708, 598480, 635885, 1017416, 1196960, 1271770, 2034832, 2543540, 4069664, 5087080, 10174160, 20348320]

約数ペア:

[(1, 20348320), (2, 10174160), (4, 5087080), (5, 4069664), (8, 2543540), (10, 2034832), (16, 1271770), (17, 1196960), (20, 1017416), (32, 635885), (34, 598480), (40, 508708), (68, 299240), (80, 254354), (85, 239392), (136, 149620), (160, 127177), (170, 119696), (272, 74810), (340, 59848), (544, 37405), (680, 29924), (1360, 14962), (2720, 7481)]