21872380

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{877}}^1$

素因数の和:958

約数の個数: 48

約数和(自身を含む): 48676320

約数和(自身を除く): 26803940

約数列:

[1, 2, 4, 5, 10, 20, 29, 43, 58, 86, 116, 145, 172, 215, 290, 430, 580, 860, 877, 1247, 1754, 2494, 3508, 4385, 4988, 6235, 8770, 12470, 17540, 24940, 25433, 37711, 50866, 75422, 101732, 127165, 150844, 188555, 254330, 377110, 508660, 754220, 1093619, 2187238, 4374476, 5468095, 10936190, 21872380]

約数ペア:

[(1, 21872380), (2, 10936190), (4, 5468095), (5, 4374476), (10, 2187238), (20, 1093619), (29, 754220), (43, 508660), (58, 377110), (86, 254330), (116, 188555), (145, 150844), (172, 127165), (215, 101732), (290, 75422), (430, 50866), (580, 37711), (860, 25433), (877, 24940), (1247, 17540), (1754, 12470), (2494, 8770), (3508, 6235), (4385, 4988)]