389331760

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{103}}^1\times {\mathrm{1277}}^1$

素因数の和:1430

約数の個数: 80

約数和(自身を含む): 939422016

約数和(自身を除く): 550090256

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 103, 148, 185, 206, 296, 370, 412, 515, 592, 740, 824, 1030, 1277, 1480, 1648, 2060, 2554, 2960, 3811, 4120, 5108, 6385, 7622, 8240, 10216, 12770, 15244, 19055, 20432, 25540, 30488, 38110, 47249, 51080, 60976, 76220, 94498, 102160, 131531, 152440, 188996, 236245, 263062, 304880, 377992, 472490, 526124, 657655, 755984, 944980, 1052248, 1315310, 1889960, 2104496, 2630620, 3779920, 4866647, 5261240, 9733294, 10522480, 19466588, 24333235, 38933176, 48666470, 77866352, 97332940, 194665880, 389331760]

約数ペア:

[(1, 389331760), (2, 194665880), (4, 97332940), (5, 77866352), (8, 48666470), (10, 38933176), (16, 24333235), (20, 19466588), (37, 10522480), (40, 9733294), (74, 5261240), (80, 4866647), (103, 3779920), (148, 2630620), (185, 2104496), (206, 1889960), (296, 1315310), (370, 1052248), (412, 944980), (515, 755984), (592, 657655), (740, 526124), (824, 472490), (1030, 377992), (1277, 304880), (1480, 263062), (1648, 236245), (2060, 188996), (2554, 152440), (2960, 131531), (3811, 102160), (4120, 94498), (5108, 76220), (6385, 60976), (7622, 51080), (8240, 47249), (10216, 38110), (12770, 30488), (15244, 25540), (19055, 20432)]