81010720

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{10333}}^1$

素因数の和:10362

約数の個数: 72

約数和(自身を含む): 222656364

約数和(自身を除く): 141645644

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 3920, 7840, 10333, 20666, 41332, 51665, 72331, 82664, 103330, 144662, 165328, 206660, 289324, 330656, 361655, 413320, 506317, 578648, 723310, 826640, 1012634, 1157296, 1446620, 1653280, 2025268, 2314592, 2531585, 2893240, 4050536, 5063170, 5786480, 8101072, 10126340, 11572960, 16202144, 20252680, 40505360, 81010720]

約数ペア:

[(1, 81010720), (2, 40505360), (4, 20252680), (5, 16202144), (7, 11572960), (8, 10126340), (10, 8101072), (14, 5786480), (16, 5063170), (20, 4050536), (28, 2893240), (32, 2531585), (35, 2314592), (40, 2025268), (49, 1653280), (56, 1446620), (70, 1157296), (80, 1012634), (98, 826640), (112, 723310), (140, 578648), (160, 506317), (196, 413320), (224, 361655), (245, 330656), (280, 289324), (392, 206660), (490, 165328), (560, 144662), (784, 103330), (980, 82664), (1120, 72331), (1568, 51665), (1960, 41332), (3920, 20666), (7840, 10333)]