81777140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{12659}}^1$

素因数の和:12704

約数の個数: 48

約数和(自身を含む): 191419200

約数和(自身を除く): 109642060

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 170, 190, 323, 340, 380, 646, 1292, 1615, 3230, 6460, 12659, 25318, 50636, 63295, 126590, 215203, 240521, 253180, 430406, 481042, 860812, 962084, 1076015, 1202605, 2152030, 2405210, 4088857, 4304060, 4810420, 8177714, 16355428, 20444285, 40888570, 81777140]

約数ペア:

[(1, 81777140), (2, 40888570), (4, 20444285), (5, 16355428), (10, 8177714), (17, 4810420), (19, 4304060), (20, 4088857), (34, 2405210), (38, 2152030), (68, 1202605), (76, 1076015), (85, 962084), (95, 860812), (170, 481042), (190, 430406), (323, 253180), (340, 240521), (380, 215203), (646, 126590), (1292, 63295), (1615, 50636), (3230, 25318), (6460, 12659)]