21372995

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{2113}}^1$

素因数の和:2159

約数の個数: 24

約数和(自身を含む): 31151904

約数和(自身を除く): 9778909

約数列:

[1, 5, 7, 17, 35, 85, 119, 289, 595, 1445, 2023, 2113, 10115, 10565, 14791, 35921, 73955, 179605, 251447, 610657, 1257235, 3053285, 4274599, 21372995]

約数ペア:

[(1, 21372995), (5, 4274599), (7, 3053285), (17, 1257235), (35, 610657), (85, 251447), (119, 179605), (289, 73955), (595, 35921), (1445, 14791), (2023, 10565), (2113, 10115)]