16403960

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{13229}}^1$

素因数の和:13271

約数の個数: 32

約数和(自身を含む): 38102400

約数和(自身を除く): 21698440

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 13229, 26458, 52916, 66145, 105832, 132290, 264580, 410099, 529160, 820198, 1640396, 2050495, 3280792, 4100990, 8201980, 16403960]

約数ペア:

[(1, 16403960), (2, 8201980), (4, 4100990), (5, 3280792), (8, 2050495), (10, 1640396), (20, 820198), (31, 529160), (40, 410099), (62, 264580), (124, 132290), (155, 105832), (248, 66145), (310, 52916), (620, 26458), (1240, 13229)]