91215980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{173}}^1\times {\mathrm{643}}^1$

素因数の和:866

約数の個数: 48

約数和(自身を含む): 197666784

約数和(自身を除く): 106450804

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 173, 205, 346, 410, 643, 692, 820, 865, 1286, 1730, 2572, 3215, 3460, 6430, 7093, 12860, 14186, 26363, 28372, 35465, 52726, 70930, 105452, 111239, 131815, 141860, 222478, 263630, 444956, 527260, 556195, 1112390, 2224780, 4560799, 9121598, 18243196, 22803995, 45607990, 91215980]

約数ペア:

[(1, 91215980), (2, 45607990), (4, 22803995), (5, 18243196), (10, 9121598), (20, 4560799), (41, 2224780), (82, 1112390), (164, 556195), (173, 527260), (205, 444956), (346, 263630), (410, 222478), (643, 141860), (692, 131815), (820, 111239), (865, 105452), (1286, 70930), (1730, 52726), (2572, 35465), (3215, 28372), (3460, 26363), (6430, 14186), (7093, 12860)]