78216520

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{1289}}^1$

素因数の和:1378

約数の個数: 64

約数和(自身を含む): 185295600

約数和(自身を除く): 107079080

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 41, 74, 82, 148, 164, 185, 205, 296, 328, 370, 410, 740, 820, 1289, 1480, 1517, 1640, 2578, 3034, 5156, 6068, 6445, 7585, 10312, 12136, 12890, 15170, 25780, 30340, 47693, 51560, 52849, 60680, 95386, 105698, 190772, 211396, 238465, 264245, 381544, 422792, 476930, 528490, 953860, 1056980, 1907720, 1955413, 2113960, 3910826, 7821652, 9777065, 15643304, 19554130, 39108260, 78216520]

約数ペア:

[(1, 78216520), (2, 39108260), (4, 19554130), (5, 15643304), (8, 9777065), (10, 7821652), (20, 3910826), (37, 2113960), (40, 1955413), (41, 1907720), (74, 1056980), (82, 953860), (148, 528490), (164, 476930), (185, 422792), (205, 381544), (296, 264245), (328, 238465), (370, 211396), (410, 190772), (740, 105698), (820, 95386), (1289, 60680), (1480, 52849), (1517, 51560), (1640, 47693), (2578, 30340), (3034, 25780), (5156, 15170), (6068, 12890), (6445, 12136), (7585, 10312)]