68780920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{349}}^1\times {\mathrm{379}}^1$

素因数の和:752

約数の個数: 64

約数和(自身を含む): 167580000

約数和(自身を除く): 98799080

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 349, 379, 520, 698, 758, 1396, 1516, 1745, 1895, 2792, 3032, 3490, 3790, 4537, 4927, 6980, 7580, 9074, 9854, 13960, 15160, 18148, 19708, 22685, 24635, 36296, 39416, 45370, 49270, 90740, 98540, 132271, 181480, 197080, 264542, 529084, 661355, 1058168, 1322710, 1719523, 2645420, 3439046, 5290840, 6878092, 8597615, 13756184, 17195230, 34390460, 68780920]

約数ペア:

[(1, 68780920), (2, 34390460), (4, 17195230), (5, 13756184), (8, 8597615), (10, 6878092), (13, 5290840), (20, 3439046), (26, 2645420), (40, 1719523), (52, 1322710), (65, 1058168), (104, 661355), (130, 529084), (260, 264542), (349, 197080), (379, 181480), (520, 132271), (698, 98540), (758, 90740), (1396, 49270), (1516, 45370), (1745, 39416), (1895, 36296), (2792, 24635), (3032, 22685), (3490, 19708), (3790, 18148), (4537, 15160), (4927, 13960), (6980, 9854), (7580, 9074)]