25752220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{401}}^1$

素因数の和:455

約数の個数: 72

約数和(自身を含む): 61795440

約数和(自身を除く): 36043220

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 169, 190, 247, 260, 338, 380, 401, 494, 676, 802, 845, 988, 1235, 1604, 1690, 2005, 2470, 3211, 3380, 4010, 4940, 5213, 6422, 7619, 8020, 10426, 12844, 15238, 16055, 20852, 26065, 30476, 32110, 38095, 52130, 64220, 67769, 76190, 99047, 104260, 135538, 152380, 198094, 271076, 338845, 396188, 495235, 677690, 990470, 1287611, 1355380, 1980940, 2575222, 5150444, 6438055, 12876110, 25752220]

約数ペア:

[(1, 25752220), (2, 12876110), (4, 6438055), (5, 5150444), (10, 2575222), (13, 1980940), (19, 1355380), (20, 1287611), (26, 990470), (38, 677690), (52, 495235), (65, 396188), (76, 338845), (95, 271076), (130, 198094), (169, 152380), (190, 135538), (247, 104260), (260, 99047), (338, 76190), (380, 67769), (401, 64220), (494, 52130), (676, 38095), (802, 32110), (845, 30476), (988, 26065), (1235, 20852), (1604, 16055), (1690, 15238), (2005, 12844), (2470, 10426), (3211, 8020), (3380, 7619), (4010, 6422), (4940, 5213)]