977771990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{203279}}^1$

素因数の和:203336

約数の個数: 32

約数和(自身を含む): 1946609280

約数和(自身を除く): 968837290

約数列:

[1, 2, 5, 10, 13, 26, 37, 65, 74, 130, 185, 370, 481, 962, 2405, 4810, 203279, 406558, 1016395, 2032790, 2642627, 5285254, 7521323, 13213135, 15042646, 26426270, 37606615, 75213230, 97777199, 195554398, 488885995, 977771990]

約数ペア:

[(1, 977771990), (2, 488885995), (5, 195554398), (10, 97777199), (13, 75213230), (26, 37606615), (37, 26426270), (65, 15042646), (74, 13213135), (130, 7521323), (185, 5285254), (370, 2642627), (481, 2032790), (962, 1016395), (2405, 406558), (4810, 203279)]