20613565520

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{2363941}}^1$

素因数の和:2364063

約数の個数: 40

約数和(自身を含む): 48366253320

約数和(自身を除く): 27752687800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 4360, 8720, 2363941, 4727882, 9455764, 11819705, 18911528, 23639410, 37823056, 47278820, 94557640, 189115280, 257669569, 515339138, 1030678276, 1288347845, 2061356552, 2576695690, 4122713104, 5153391380, 10306782760, 20613565520]

約数ペア:

[(1, 20613565520), (2, 10306782760), (4, 5153391380), (5, 4122713104), (8, 2576695690), (10, 2061356552), (16, 1288347845), (20, 1030678276), (40, 515339138), (80, 257669569), (109, 189115280), (218, 94557640), (436, 47278820), (545, 37823056), (872, 23639410), (1090, 18911528), (1744, 11819705), (2180, 9455764), (4360, 4727882), (8720, 2363941)]