19887416

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{349}}^1\times {\mathrm{419}}^1$

素因数の和:791

約数の個数: 32

約数和(自身を含む): 39690000

約数和(自身を除く): 19802584

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 349, 419, 698, 838, 1396, 1676, 2792, 3352, 5933, 7123, 11866, 14246, 23732, 28492, 47464, 56984, 146231, 292462, 584924, 1169848, 2485927, 4971854, 9943708, 19887416]

約数ペア:

[(1, 19887416), (2, 9943708), (4, 4971854), (8, 2485927), (17, 1169848), (34, 584924), (68, 292462), (136, 146231), (349, 56984), (419, 47464), (698, 28492), (838, 23732), (1396, 14246), (1676, 11866), (2792, 7123), (3352, 5933)]