19888240

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{6719}}^1$

素因数の和:6769

約数の個数: 40

約数和(自身を含む): 47496960

約数和(自身を除く): 27608720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 148, 185, 296, 370, 592, 740, 1480, 2960, 6719, 13438, 26876, 33595, 53752, 67190, 107504, 134380, 248603, 268760, 497206, 537520, 994412, 1243015, 1988824, 2486030, 3977648, 4972060, 9944120, 19888240]

約数ペア:

[(1, 19888240), (2, 9944120), (4, 4972060), (5, 3977648), (8, 2486030), (10, 1988824), (16, 1243015), (20, 994412), (37, 537520), (40, 497206), (74, 268760), (80, 248603), (148, 134380), (185, 107504), (296, 67190), (370, 53752), (592, 33595), (740, 26876), (1480, 13438), (2960, 6719)]