209401720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{6703}}^1$

素因数の和:6796

約数の個数: 64

約数和(自身を含む): 521303040

約数和(自身を除く): 311901320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 71, 88, 110, 142, 220, 284, 355, 440, 568, 710, 781, 1420, 1562, 2840, 3124, 3905, 6248, 6703, 7810, 13406, 15620, 26812, 31240, 33515, 53624, 67030, 73733, 134060, 147466, 268120, 294932, 368665, 475913, 589864, 737330, 951826, 1474660, 1903652, 2379565, 2949320, 3807304, 4759130, 5235043, 9518260, 10470086, 19036520, 20940172, 26175215, 41880344, 52350430, 104700860, 209401720]

約数ペア:

[(1, 209401720), (2, 104700860), (4, 52350430), (5, 41880344), (8, 26175215), (10, 20940172), (11, 19036520), (20, 10470086), (22, 9518260), (40, 5235043), (44, 4759130), (55, 3807304), (71, 2949320), (88, 2379565), (110, 1903652), (142, 1474660), (220, 951826), (284, 737330), (355, 589864), (440, 475913), (568, 368665), (710, 294932), (781, 268120), (1420, 147466), (1562, 134060), (2840, 73733), (3124, 67030), (3905, 53624), (6248, 33515), (6703, 31240), (7810, 26812), (13406, 15620)]