21416260

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{62989}}^1$

素因数の和:63015

約数の個数: 24

約数和(自身を含む): 47620440

約数和(自身を除く): 26204180

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 62989, 125978, 251956, 314945, 629890, 1070813, 1259780, 2141626, 4283252, 5354065, 10708130, 21416260]

約数ペア:

[(1, 21416260), (2, 10708130), (4, 5354065), (5, 4283252), (10, 2141626), (17, 1259780), (20, 1070813), (34, 629890), (68, 314945), (85, 251956), (170, 125978), (340, 62989)]