221520355

素因数分解:

$5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{919}}^1$

素因数の和:1099

約数の個数: 32

約数和(自身を含む): 311592960

約数和(自身を除く): 90072605

約数列:

[1, 5, 7, 35, 71, 97, 355, 485, 497, 679, 919, 2485, 3395, 4595, 6433, 6887, 32165, 34435, 48209, 65249, 89143, 241045, 326245, 445715, 456743, 624001, 2283715, 3120005, 6329153, 31645765, 44304071, 221520355]

約数ペア:

[(1, 221520355), (5, 44304071), (7, 31645765), (35, 6329153), (71, 3120005), (97, 2283715), (355, 624001), (485, 456743), (497, 445715), (679, 326245), (919, 241045), (2485, 89143), (3395, 65249), (4595, 48209), (6433, 34435), (6887, 32165)]