18845680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{461}}^1$

素因数の和:554

約数の個数: 80

約数和(自身を含む): 50871744

約数和(自身を除く): 32026064

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 73, 80, 112, 140, 146, 280, 292, 365, 461, 511, 560, 584, 730, 922, 1022, 1168, 1460, 1844, 2044, 2305, 2555, 2920, 3227, 3688, 4088, 4610, 5110, 5840, 6454, 7376, 8176, 9220, 10220, 12908, 16135, 18440, 20440, 25816, 32270, 33653, 36880, 40880, 51632, 64540, 67306, 129080, 134612, 168265, 235571, 258160, 269224, 336530, 471142, 538448, 673060, 942284, 1177855, 1346120, 1884568, 2355710, 2692240, 3769136, 4711420, 9422840, 18845680]

約数ペア:

[(1, 18845680), (2, 9422840), (4, 4711420), (5, 3769136), (7, 2692240), (8, 2355710), (10, 1884568), (14, 1346120), (16, 1177855), (20, 942284), (28, 673060), (35, 538448), (40, 471142), (56, 336530), (70, 269224), (73, 258160), (80, 235571), (112, 168265), (140, 134612), (146, 129080), (280, 67306), (292, 64540), (365, 51632), (461, 40880), (511, 36880), (560, 33653), (584, 32270), (730, 25816), (922, 20440), (1022, 18440), (1168, 16135), (1460, 12908), (1844, 10220), (2044, 9220), (2305, 8176), (2555, 7376), (2920, 6454), (3227, 5840), (3688, 5110), (4088, 4610)]