1390871120

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{404323}}^1$

素因数の和:404379

約数の個数: 40

約数和(自身を含む): 3308987616

約数和(自身を除く): 1918116496

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 404323, 808646, 1617292, 2021615, 3234584, 4043230, 6469168, 8086460, 16172920, 17385889, 32345840, 34771778, 69543556, 86929445, 139087112, 173858890, 278174224, 347717780, 695435560, 1390871120]

約数ペア:

[(1, 1390871120), (2, 695435560), (4, 347717780), (5, 278174224), (8, 173858890), (10, 139087112), (16, 86929445), (20, 69543556), (40, 34771778), (43, 32345840), (80, 17385889), (86, 16172920), (172, 8086460), (215, 6469168), (344, 4043230), (430, 3234584), (688, 2021615), (860, 1617292), (1720, 808646), (3440, 404323)]