2748980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{109}}^1$

素因数の和:228

約数の個数: 48

約数和(自身を含む): 6338640

約数和(自身を除く): 3589660

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 97, 109, 130, 194, 218, 260, 388, 436, 485, 545, 970, 1090, 1261, 1417, 1940, 2180, 2522, 2834, 5044, 5668, 6305, 7085, 10573, 12610, 14170, 21146, 25220, 28340, 42292, 52865, 105730, 137449, 211460, 274898, 549796, 687245, 1374490, 2748980]

約数ペア:

[(1, 2748980), (2, 1374490), (4, 687245), (5, 549796), (10, 274898), (13, 211460), (20, 137449), (26, 105730), (52, 52865), (65, 42292), (97, 28340), (109, 25220), (130, 21146), (194, 14170), (218, 12610), (260, 10573), (388, 7085), (436, 6305), (485, 5668), (545, 5044), (970, 2834), (1090, 2522), (1261, 2180), (1417, 1940)]