20017400

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{7699}}^1$

素因数の和:7728

約数の個数: 48

約数和(自身を含む): 50127000

約数和(自身を除く): 30109600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 200, 260, 325, 520, 650, 1300, 2600, 7699, 15398, 30796, 38495, 61592, 76990, 100087, 153980, 192475, 200174, 307960, 384950, 400348, 500435, 769900, 800696, 1000870, 1539800, 2001740, 2502175, 4003480, 5004350, 10008700, 20017400]

約数ペア:

[(1, 20017400), (2, 10008700), (4, 5004350), (5, 4003480), (8, 2502175), (10, 2001740), (13, 1539800), (20, 1000870), (25, 800696), (26, 769900), (40, 500435), (50, 400348), (52, 384950), (65, 307960), (100, 200174), (104, 192475), (130, 153980), (200, 100087), (260, 76990), (325, 61592), (520, 38495), (650, 30796), (1300, 15398), (2600, 7699)]