201977425

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{263}}^1$

素因数の和:442

約数の個数: 48

約数和(自身を含む): 288731520

約数和(自身を除く): 86754095

約数列:

[1, 5, 13, 17, 25, 65, 85, 139, 221, 263, 325, 425, 695, 1105, 1315, 1807, 2363, 3419, 3475, 4471, 5525, 6575, 9035, 11815, 17095, 22355, 30719, 36557, 45175, 58123, 59075, 85475, 111775, 153595, 182785, 290615, 475241, 621469, 767975, 913925, 1453075, 2376205, 3107345, 8079097, 11881025, 15536725, 40395485, 201977425]

約数ペア:

[(1, 201977425), (5, 40395485), (13, 15536725), (17, 11881025), (25, 8079097), (65, 3107345), (85, 2376205), (139, 1453075), (221, 913925), (263, 767975), (325, 621469), (425, 475241), (695, 290615), (1105, 182785), (1315, 153595), (1807, 111775), (2363, 85475), (3419, 59075), (3475, 58123), (4471, 45175), (5525, 36557), (6575, 30719), (9035, 22355), (11815, 17095)]