209983120

素因数分解:

$2^4\times 5^1\times {\mathrm{163}}^1\times {\mathrm{16103}}^1$

素因数の和:16279

約数の個数: 40

約数和(自身を含む): 491236416

約数和(自身を除く): 281253296

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 163, 326, 652, 815, 1304, 1630, 2608, 3260, 6520, 13040, 16103, 32206, 64412, 80515, 128824, 161030, 257648, 322060, 644120, 1288240, 2624789, 5249578, 10499156, 13123945, 20998312, 26247890, 41996624, 52495780, 104991560, 209983120]

約数ペア:

[(1, 209983120), (2, 104991560), (4, 52495780), (5, 41996624), (8, 26247890), (10, 20998312), (16, 13123945), (20, 10499156), (40, 5249578), (80, 2624789), (163, 1288240), (326, 644120), (652, 322060), (815, 257648), (1304, 161030), (1630, 128824), (2608, 80515), (3260, 64412), (6520, 32206), (13040, 16103)]