21973040

素因数分解:

$2^4\times 5^1\times {\mathrm{349}}^1\times {\mathrm{787}}^1$

素因数の和:1149

約数の個数: 40

約数和(自身を含む): 51298800

約数和(自身を除く): 29325760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 349, 698, 787, 1396, 1574, 1745, 2792, 3148, 3490, 3935, 5584, 6296, 6980, 7870, 12592, 13960, 15740, 27920, 31480, 62960, 274663, 549326, 1098652, 1373315, 2197304, 2746630, 4394608, 5493260, 10986520, 21973040]

約数ペア:

[(1, 21973040), (2, 10986520), (4, 5493260), (5, 4394608), (8, 2746630), (10, 2197304), (16, 1373315), (20, 1098652), (40, 549326), (80, 274663), (349, 62960), (698, 31480), (787, 27920), (1396, 15740), (1574, 13960), (1745, 12592), (2792, 7870), (3148, 6980), (3490, 6296), (3935, 5584)]