81603306.000000000

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{6673}}^1$

素因数の和:6715

約数の個数: 72

約数和(自身を含む): 410370912

約数和(自身を除く): 252487732

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 169, 182, 260, 338, 364, 455, 676, 845, 910, 1183, 1690, 1820, 2366, 3380, 4732, 5915, 6673, 11830, 13346, 23660, 26692, 33365, 46711, 66730, 86749, 93422, 133460, 173498, 186844, 233555, 346996, 433745, 467110, 607243, 867490, 934220, 1127737, 1214486, 1734980, 2255474, 2428972, 3036215, 4510948, 5638685, 6072430, 7894159, 11277370, 12144860, 15788318, 22554740, 31576636, 39470795, 78941590, 157883180]

約数ペア:

[(1, 157883180), (2, 78941590), (4, 39470795), (5, 31576636), (7, 22554740), (10, 15788318), (13, 12144860), (14, 11277370), (20, 7894159), (26, 6072430), (28, 5638685), (35, 4510948), (52, 3036215), (65, 2428972), (70, 2255474), (91, 1734980), (130, 1214486), (140, 1127737), (169, 934220), (182, 867490), (260, 607243), (338, 467110), (364, 433745), (455, 346996), (676, 233555), (845, 186844), (910, 173498), (1183, 133460), (1690, 93422), (1820, 86749), (2366, 66730), (3380, 46711), (4732, 33365), (5915, 26692), (6673, 23660), (11830, 13346)]