31820425

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1$

素因数の和:298

約数の個数: 48

約数和(自身を含む): 49496832

約数和(自身を除く): 17676407

約数列:

[1, 5, 7, 13, 25, 35, 65, 71, 91, 175, 197, 325, 355, 455, 497, 923, 985, 1379, 1775, 2275, 2485, 2561, 4615, 4925, 6461, 6895, 12425, 12805, 13987, 17927, 23075, 32305, 34475, 64025, 69935, 89635, 97909, 161525, 181831, 349675, 448175, 489545, 909155, 1272817, 2447725, 4545775, 6364085, 31820425]

約数ペア:

[(1, 31820425), (5, 6364085), (7, 4545775), (13, 2447725), (25, 1272817), (35, 909155), (65, 489545), (71, 448175), (91, 349675), (175, 181831), (197, 161525), (325, 97909), (355, 89635), (455, 69935), (497, 64025), (923, 34475), (985, 32305), (1379, 23075), (1775, 17927), (2275, 13987), (2485, 12805), (2561, 12425), (4615, 6895), (4925, 6461)]