315976720

素因数分解:

$2^4\times 5^1\times {\mathrm{211}}^1\times {\mathrm{18719}}^1$

素因数の和:18943

約数の個数: 40

約数和(自身を含む): 738167040

約数和(自身を除く): 422190320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 211, 422, 844, 1055, 1688, 2110, 3376, 4220, 8440, 16880, 18719, 37438, 74876, 93595, 149752, 187190, 299504, 374380, 748760, 1497520, 3949709, 7899418, 15798836, 19748545, 31597672, 39497090, 63195344, 78994180, 157988360, 315976720]

約数ペア:

[(1, 315976720), (2, 157988360), (4, 78994180), (5, 63195344), (8, 39497090), (10, 31597672), (16, 19748545), (20, 15798836), (40, 7899418), (80, 3949709), (211, 1497520), (422, 748760), (844, 374380), (1055, 299504), (1688, 187190), (2110, 149752), (3376, 93595), (4220, 74876), (8440, 37438), (16880, 18719)]