210820120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{752929}}^1$

素因数の和:752947

約数の個数: 32

約数和(自身を含む): 542109600

約数和(自身を除く): 331289480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 752929, 1505858, 3011716, 3764645, 5270503, 6023432, 7529290, 10541006, 15058580, 21082012, 26352515, 30117160, 42164024, 52705030, 105410060, 210820120]

約数ペア:

[(1, 210820120), (2, 105410060), (4, 52705030), (5, 42164024), (7, 30117160), (8, 26352515), (10, 21082012), (14, 15058580), (20, 10541006), (28, 7529290), (35, 6023432), (40, 5270503), (56, 3764645), (70, 3011716), (140, 1505858), (280, 752929)]