19760380

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{349}}^1$

素因数の和:526

約数の個数: 48

約数和(自身を含む): 44100000

約数和(自身を除く): 24339620

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 149, 190, 298, 349, 380, 596, 698, 745, 1396, 1490, 1745, 2831, 2980, 3490, 5662, 6631, 6980, 11324, 13262, 14155, 26524, 28310, 33155, 52001, 56620, 66310, 104002, 132620, 208004, 260005, 520010, 988019, 1040020, 1976038, 3952076, 4940095, 9880190, 19760380]

約数ペア:

[(1, 19760380), (2, 9880190), (4, 4940095), (5, 3952076), (10, 1976038), (19, 1040020), (20, 988019), (38, 520010), (76, 260005), (95, 208004), (149, 132620), (190, 104002), (298, 66310), (349, 56620), (380, 52001), (596, 33155), (698, 28310), (745, 26524), (1396, 14155), (1490, 13262), (1745, 11324), (2831, 6980), (2980, 6631), (3490, 5662)]