20601776

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{401}}^1$

素因数の和:454

約数の個数: 60

約数和(自身を含む): 45610920

約数和(自身を除く): 25009144

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 169, 208, 247, 304, 338, 401, 494, 676, 802, 988, 1352, 1604, 1976, 2704, 3208, 3211, 3952, 5213, 6416, 6422, 7619, 10426, 12844, 15238, 20852, 25688, 30476, 41704, 51376, 60952, 67769, 83408, 99047, 121904, 135538, 198094, 271076, 396188, 542152, 792376, 1084304, 1287611, 1584752, 2575222, 5150444, 10300888, 20601776]

約数ペア:

[(1, 20601776), (2, 10300888), (4, 5150444), (8, 2575222), (13, 1584752), (16, 1287611), (19, 1084304), (26, 792376), (38, 542152), (52, 396188), (76, 271076), (104, 198094), (152, 135538), (169, 121904), (208, 99047), (247, 83408), (304, 67769), (338, 60952), (401, 51376), (494, 41704), (676, 30476), (802, 25688), (988, 20852), (1352, 15238), (1604, 12844), (1976, 10426), (2704, 7619), (3208, 6422), (3211, 6416), (3952, 5213)]