161400440

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{212369}}^1$

素因数の和:212399

約数の個数: 32

約数和(自身を含む): 382266000

約数和(自身を除く): 220865560

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 212369, 424738, 849476, 1061845, 1698952, 2123690, 4035011, 4247380, 8070022, 8494760, 16140044, 20175055, 32280088, 40350110, 80700220, 161400440]

約数ペア:

[(1, 161400440), (2, 80700220), (4, 40350110), (5, 32280088), (8, 20175055), (10, 16140044), (19, 8494760), (20, 8070022), (38, 4247380), (40, 4035011), (76, 2123690), (95, 1698952), (152, 1061845), (190, 849476), (380, 424738), (760, 212369)]