78155720

素因数分解:

$2^3\times 5^1\times {\mathrm{331}}^1\times {\mathrm{5903}}^1$

素因数の和:6245

約数の個数: 32

約数和(自身を含む): 176411520

約数和(自身を除く): 98255800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 331, 662, 1324, 1655, 2648, 3310, 5903, 6620, 11806, 13240, 23612, 29515, 47224, 59030, 118060, 236120, 1953893, 3907786, 7815572, 9769465, 15631144, 19538930, 39077860, 78155720]

約数ペア:

[(1, 78155720), (2, 39077860), (4, 19538930), (5, 15631144), (8, 9769465), (10, 7815572), (20, 3907786), (40, 1953893), (331, 236120), (662, 118060), (1324, 59030), (1655, 47224), (2648, 29515), (3310, 23612), (5903, 13240), (6620, 11806)]