131506720

素因数分解:

$2^5\times 5^1\times {\mathrm{431}}^1\times {\mathrm{1907}}^1$

素因数の和:2353

約数の個数: 48

約数和(自身を含む): 311568768

約数和(自身を除く): 180062048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 431, 862, 1724, 1907, 2155, 3448, 3814, 4310, 6896, 7628, 8620, 9535, 13792, 15256, 17240, 19070, 30512, 34480, 38140, 61024, 68960, 76280, 152560, 305120, 821917, 1643834, 3287668, 4109585, 6575336, 8219170, 13150672, 16438340, 26301344, 32876680, 65753360, 131506720]

約数ペア:

[(1, 131506720), (2, 65753360), (4, 32876680), (5, 26301344), (8, 16438340), (10, 13150672), (16, 8219170), (20, 6575336), (32, 4109585), (40, 3287668), (80, 1643834), (160, 821917), (431, 305120), (862, 152560), (1724, 76280), (1907, 68960), (2155, 61024), (3448, 38140), (3814, 34480), (4310, 30512), (6896, 19070), (7628, 17240), (8620, 15256), (9535, 13792)]