31301920

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{149}}^1$

素因数の和:278

約数の個数: 96

約数和(自身を含む): 80967600

約数和(自身を除く): 49665680

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 101, 104, 130, 149, 160, 202, 208, 260, 298, 404, 416, 505, 520, 596, 745, 808, 1010, 1040, 1192, 1313, 1490, 1616, 1937, 2020, 2080, 2384, 2626, 2980, 3232, 3874, 4040, 4768, 5252, 5960, 6565, 7748, 8080, 9685, 10504, 11920, 13130, 15049, 15496, 16160, 19370, 21008, 23840, 26260, 30098, 30992, 38740, 42016, 52520, 60196, 61984, 75245, 77480, 105040, 120392, 150490, 154960, 195637, 210080, 240784, 300980, 309920, 391274, 481568, 601960, 782548, 978185, 1203920, 1565096, 1956370, 2407840, 3130192, 3912740, 6260384, 7825480, 15650960, 31301920]

約数ペア:

[(1, 31301920), (2, 15650960), (4, 7825480), (5, 6260384), (8, 3912740), (10, 3130192), (13, 2407840), (16, 1956370), (20, 1565096), (26, 1203920), (32, 978185), (40, 782548), (52, 601960), (65, 481568), (80, 391274), (101, 309920), (104, 300980), (130, 240784), (149, 210080), (160, 195637), (202, 154960), (208, 150490), (260, 120392), (298, 105040), (404, 77480), (416, 75245), (505, 61984), (520, 60196), (596, 52520), (745, 42016), (808, 38740), (1010, 30992), (1040, 30098), (1192, 26260), (1313, 23840), (1490, 21008), (1616, 19370), (1937, 16160), (2020, 15496), (2080, 15049), (2384, 13130), (2626, 11920), (2980, 10504), (3232, 9685), (3874, 8080), (4040, 7748), (4768, 6565), (5252, 5960)]