18953720

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{6491}}^1$

素因数の和:6575

約数の個数: 32

約数和(自身を含む): 43236720

約数和(自身を除く): 24283000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 6491, 12982, 25964, 32455, 51928, 64910, 129820, 259640, 473843, 947686, 1895372, 2369215, 3790744, 4738430, 9476860, 18953720]

約数ペア:

[(1, 18953720), (2, 9476860), (4, 4738430), (5, 3790744), (8, 2369215), (10, 1895372), (20, 947686), (40, 473843), (73, 259640), (146, 129820), (292, 64910), (365, 51928), (584, 32455), (730, 25964), (1460, 12982), (2920, 6491)]