81898240

素因数分解:

$2^8\times 5^1\times {\mathrm{109}}^1\times {\mathrm{587}}^1$

素因数の和:717

約数の個数: 72

約数和(自身を含む): 198308880

約数和(自身を除く): 116410640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 109, 128, 160, 218, 256, 320, 436, 545, 587, 640, 872, 1090, 1174, 1280, 1744, 2180, 2348, 2935, 3488, 4360, 4696, 5870, 6976, 8720, 9392, 11740, 13952, 17440, 18784, 23480, 27904, 34880, 37568, 46960, 63983, 69760, 75136, 93920, 127966, 139520, 150272, 187840, 255932, 319915, 375680, 511864, 639830, 751360, 1023728, 1279660, 2047456, 2559320, 4094912, 5118640, 8189824, 10237280, 16379648, 20474560, 40949120, 81898240]

約数ペア:

[(1, 81898240), (2, 40949120), (4, 20474560), (5, 16379648), (8, 10237280), (10, 8189824), (16, 5118640), (20, 4094912), (32, 2559320), (40, 2047456), (64, 1279660), (80, 1023728), (109, 751360), (128, 639830), (160, 511864), (218, 375680), (256, 319915), (320, 255932), (436, 187840), (545, 150272), (587, 139520), (640, 127966), (872, 93920), (1090, 75136), (1174, 69760), (1280, 63983), (1744, 46960), (2180, 37568), (2348, 34880), (2935, 27904), (3488, 23480), (4360, 18784), (4696, 17440), (5870, 13952), (6976, 11740), (8720, 9392)]