71864940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{397}}^1\times {\mathrm{431}}^1$

素因数の和:847

約数の個数: 96

約数和(自身を含む): 231081984

約数和(自身を除く): 159217044

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 397, 420, 431, 794, 862, 1191, 1293, 1588, 1724, 1985, 2155, 2382, 2586, 2779, 3017, 3970, 4310, 4764, 5172, 5558, 5955, 6034, 6465, 7940, 8337, 8620, 9051, 11116, 11910, 12068, 12930, 13895, 15085, 16674, 18102, 23820, 25860, 27790, 30170, 33348, 36204, 41685, 45255, 55580, 60340, 83370, 90510, 166740, 171107, 181020, 342214, 513321, 684428, 855535, 1026642, 1197749, 1711070, 2053284, 2395498, 2566605, 3422140, 3593247, 4790996, 5133210, 5988745, 7186494, 10266420, 11977490, 14372988, 17966235, 23954980, 35932470, 71864940]

約数ペア:

[(1, 71864940), (2, 35932470), (3, 23954980), (4, 17966235), (5, 14372988), (6, 11977490), (7, 10266420), (10, 7186494), (12, 5988745), (14, 5133210), (15, 4790996), (20, 3593247), (21, 3422140), (28, 2566605), (30, 2395498), (35, 2053284), (42, 1711070), (60, 1197749), (70, 1026642), (84, 855535), (105, 684428), (140, 513321), (210, 342214), (397, 181020), (420, 171107), (431, 166740), (794, 90510), (862, 83370), (1191, 60340), (1293, 55580), (1588, 45255), (1724, 41685), (1985, 36204), (2155, 33348), (2382, 30170), (2586, 27790), (2779, 25860), (3017, 23820), (3970, 18102), (4310, 16674), (4764, 15085), (5172, 13895), (5558, 12930), (5955, 12068), (6034, 11910), (6465, 11116), (7940, 9051), (8337, 8620)]