78504020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{683}}^1\times {\mathrm{821}}^1$

素因数の和:1520

約数の個数: 48

約数和(自身を含む): 188915328

約数和(自身を除く): 110411308

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 683, 821, 1366, 1642, 2732, 3284, 3415, 4105, 4781, 5747, 6830, 8210, 9562, 11494, 13660, 16420, 19124, 22988, 23905, 28735, 47810, 57470, 95620, 114940, 560743, 1121486, 2242972, 2803715, 3925201, 5607430, 7850402, 11214860, 15700804, 19626005, 39252010, 78504020]

約数ペア:

[(1, 78504020), (2, 39252010), (4, 19626005), (5, 15700804), (7, 11214860), (10, 7850402), (14, 5607430), (20, 3925201), (28, 2803715), (35, 2242972), (70, 1121486), (140, 560743), (683, 114940), (821, 95620), (1366, 57470), (1642, 47810), (2732, 28735), (3284, 23905), (3415, 22988), (4105, 19124), (4781, 16420), (5747, 13660), (6830, 11494), (8210, 9562)]