209464840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{402817}}^1$

素因数の和:402841

約数の個数: 32

約数和(自身を含む): 507550680

約数和(自身を除く): 298085840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 402817, 805634, 1611268, 2014085, 3222536, 4028170, 5236621, 8056340, 10473242, 16112680, 20946484, 26183105, 41892968, 52366210, 104732420, 209464840]

約数ペア:

[(1, 209464840), (2, 104732420), (4, 52366210), (5, 41892968), (8, 26183105), (10, 20946484), (13, 16112680), (20, 10473242), (26, 8056340), (40, 5236621), (52, 4028170), (65, 3222536), (104, 2014085), (130, 1611268), (260, 805634), (520, 402817)]