21316844

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{2393}}^1$

素因数の和:2545

約数の個数: 24

約数和(自身を含む): 39817008

約数和(自身を除く): 18500164

約数列:

[1, 2, 4, 17, 34, 68, 131, 262, 524, 2227, 2393, 4454, 4786, 8908, 9572, 40681, 81362, 162724, 313483, 626966, 1253932, 5329211, 10658422, 21316844]

約数ペア:

[(1, 21316844), (2, 10658422), (4, 5329211), (17, 1253932), (34, 626966), (68, 313483), (131, 162724), (262, 81362), (524, 40681), (2227, 9572), (2393, 8908), (4454, 4786)]