20640210

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{40471}}^1$

素因数の和:40498

約数の個数: 32

約数和(自身を含む): 52451712

約数和(自身を除く): 31811502

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 30, 34, 51, 85, 102, 170, 255, 510, 40471, 80942, 121413, 202355, 242826, 404710, 607065, 688007, 1214130, 1376014, 2064021, 3440035, 4128042, 6880070, 10320105, 20640210]

約数ペア:

[(1, 20640210), (2, 10320105), (3, 6880070), (5, 4128042), (6, 3440035), (10, 2064021), (15, 1376014), (17, 1214130), (30, 688007), (34, 607065), (51, 404710), (85, 242826), (102, 202355), (170, 121413), (255, 80942), (510, 40471)]