198973240

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{70061}}^1$

素因数の和:70143

約数の個数: 32

約数和(自身を含む): 454001760

約数和(自身を除く): 255028520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 70061, 140122, 280244, 350305, 560488, 700610, 1401220, 2802440, 4974331, 9948662, 19897324, 24871655, 39794648, 49743310, 99486620, 198973240]

約数ペア:

[(1, 198973240), (2, 99486620), (4, 49743310), (5, 39794648), (8, 24871655), (10, 19897324), (20, 9948662), (40, 4974331), (71, 2802440), (142, 1401220), (284, 700610), (355, 560488), (568, 350305), (710, 280244), (1420, 140122), (2840, 70061)]