221472920

素因数分解:

$2^3\times 5^1\times {\mathrm{853}}^1\times {\mathrm{6491}}^1$

素因数の和:7355

約数の個数: 32

約数和(自身を含む): 498975120

約数和(自身を除く): 277502200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 853, 1706, 3412, 4265, 6491, 6824, 8530, 12982, 17060, 25964, 32455, 34120, 51928, 64910, 129820, 259640, 5536823, 11073646, 22147292, 27684115, 44294584, 55368230, 110736460, 221472920]

約数ペア:

[(1, 221472920), (2, 110736460), (4, 55368230), (5, 44294584), (8, 27684115), (10, 22147292), (20, 11073646), (40, 5536823), (853, 259640), (1706, 129820), (3412, 64910), (4265, 51928), (6491, 34120), (6824, 32455), (8530, 25964), (12982, 17060)]