211672520

素因数分解:

$2^3\times 5^1\times {\mathrm{647}}^1\times {\mathrm{8179}}^1$

素因数の和:8837

約数の個数: 32

約数和(自身を含む): 477057600

約数和(自身を除く): 265385080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 647, 1294, 2588, 3235, 5176, 6470, 8179, 12940, 16358, 25880, 32716, 40895, 65432, 81790, 163580, 327160, 5291813, 10583626, 21167252, 26459065, 42334504, 52918130, 105836260, 211672520]

約数ペア:

[(1, 211672520), (2, 105836260), (4, 52918130), (5, 42334504), (8, 26459065), (10, 21167252), (20, 10583626), (40, 5291813), (647, 327160), (1294, 163580), (2588, 81790), (3235, 65432), (5176, 40895), (6470, 32716), (8179, 25880), (12940, 16358)]