21720858

素因数分解:

$2^1\times 3^1\times {\mathrm{73}}^1\times {\mathrm{101}}^1\times {\mathrm{491}}^1$

素因数の和:670

約数の個数: 32

約数和(自身を含む): 44563392

約数和(自身を除く): 22842534

約数列:

[1, 2, 3, 6, 73, 101, 146, 202, 219, 303, 438, 491, 606, 982, 1473, 2946, 7373, 14746, 22119, 35843, 44238, 49591, 71686, 99182, 107529, 148773, 215058, 297546, 3620143, 7240286, 10860429, 21720858]

約数ペア:

[(1, 21720858), (2, 10860429), (3, 7240286), (6, 3620143), (73, 297546), (101, 215058), (146, 148773), (202, 107529), (219, 99182), (303, 71686), (438, 49591), (491, 44238), (606, 35843), (982, 22119), (1473, 14746), (2946, 7373)]