31890740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{631}}^1$

素因数の和:685

約数の個数: 72

約数和(自身を含む): 80906112

約数和(自身を除く): 49015372

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 361, 380, 532, 631, 665, 722, 1262, 1330, 1444, 1805, 2524, 2527, 2660, 3155, 3610, 4417, 5054, 6310, 7220, 8834, 10108, 11989, 12620, 12635, 17668, 22085, 23978, 25270, 44170, 47956, 50540, 59945, 83923, 88340, 119890, 167846, 227791, 239780, 335692, 419615, 455582, 839230, 911164, 1138955, 1594537, 1678460, 2277910, 3189074, 4555820, 6378148, 7972685, 15945370, 31890740]

約数ペア:

[(1, 31890740), (2, 15945370), (4, 7972685), (5, 6378148), (7, 4555820), (10, 3189074), (14, 2277910), (19, 1678460), (20, 1594537), (28, 1138955), (35, 911164), (38, 839230), (70, 455582), (76, 419615), (95, 335692), (133, 239780), (140, 227791), (190, 167846), (266, 119890), (361, 88340), (380, 83923), (532, 59945), (631, 50540), (665, 47956), (722, 44170), (1262, 25270), (1330, 23978), (1444, 22085), (1805, 17668), (2524, 12635), (2527, 12620), (2660, 11989), (3155, 10108), (3610, 8834), (4417, 7220), (5054, 6310)]