81059720

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{41357}}^1$

素因数の和:41382

約数の個数: 48

約数和(自身を含む): 212166540

約数和(自身を除く): 131106820

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 41357, 82714, 165428, 206785, 289499, 330856, 413570, 578998, 827140, 1157996, 1447495, 1654280, 2026493, 2315992, 2894990, 4052986, 5789980, 8105972, 10132465, 11579960, 16211944, 20264930, 40529860, 81059720]

約数ペア:

[(1, 81059720), (2, 40529860), (4, 20264930), (5, 16211944), (7, 11579960), (8, 10132465), (10, 8105972), (14, 5789980), (20, 4052986), (28, 2894990), (35, 2315992), (40, 2026493), (49, 1654280), (56, 1447495), (70, 1157996), (98, 827140), (140, 578998), (196, 413570), (245, 330856), (280, 289499), (392, 206785), (490, 165428), (980, 82714), (1960, 41357)]