213570680

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{227}}^1\times {\mathrm{547}}^1$

素因数の和:828

約数の個数: 64

約数和(自身を含む): 494778240

約数和(自身を除く): 281207560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 227, 344, 430, 454, 547, 860, 908, 1094, 1135, 1720, 1816, 2188, 2270, 2735, 4376, 4540, 5470, 9080, 9761, 10940, 19522, 21880, 23521, 39044, 47042, 48805, 78088, 94084, 97610, 117605, 124169, 188168, 195220, 235210, 248338, 390440, 470420, 496676, 620845, 940840, 993352, 1241690, 2483380, 4966760, 5339267, 10678534, 21357068, 26696335, 42714136, 53392670, 106785340, 213570680]

約数ペア:

[(1, 213570680), (2, 106785340), (4, 53392670), (5, 42714136), (8, 26696335), (10, 21357068), (20, 10678534), (40, 5339267), (43, 4966760), (86, 2483380), (172, 1241690), (215, 993352), (227, 940840), (344, 620845), (430, 496676), (454, 470420), (547, 390440), (860, 248338), (908, 235210), (1094, 195220), (1135, 188168), (1720, 124169), (1816, 117605), (2188, 97610), (2270, 94084), (2735, 78088), (4376, 48805), (4540, 47042), (5470, 39044), (9080, 23521), (9761, 21880), (10940, 19522)]