19973156

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{313}}^1$

素因数の和:420

約数の個数: 48

約数和(自身を含む): 41779584

約数和(自身を除く): 21806428

約数列:

[1, 2, 4, 7, 14, 28, 43, 53, 86, 106, 172, 212, 301, 313, 371, 602, 626, 742, 1204, 1252, 1484, 2191, 2279, 4382, 4558, 8764, 9116, 13459, 15953, 16589, 26918, 31906, 33178, 53836, 63812, 66356, 94213, 116123, 188426, 232246, 376852, 464492, 713327, 1426654, 2853308, 4993289, 9986578, 19973156]

約数ペア:

[(1, 19973156), (2, 9986578), (4, 4993289), (7, 2853308), (14, 1426654), (28, 713327), (43, 464492), (53, 376852), (86, 232246), (106, 188426), (172, 116123), (212, 94213), (301, 66356), (313, 63812), (371, 53836), (602, 33178), (626, 31906), (742, 26918), (1204, 16589), (1252, 15953), (1484, 13459), (2191, 9116), (2279, 8764), (4382, 4558)]