642880

素因数分解:

$2^6\times 5^1\times 7^2\times {\mathrm{41}}^1$

素因数の和:72

約数の個数: 84

約数和(自身を含む): 1824228

約数和(自身を除く): 1181348

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 41, 49, 56, 64, 70, 80, 82, 98, 112, 140, 160, 164, 196, 205, 224, 245, 280, 287, 320, 328, 392, 410, 448, 490, 560, 574, 656, 784, 820, 980, 1120, 1148, 1312, 1435, 1568, 1640, 1960, 2009, 2240, 2296, 2624, 2870, 3136, 3280, 3920, 4018, 4592, 5740, 6560, 7840, 8036, 9184, 10045, 11480, 13120, 15680, 16072, 18368, 20090, 22960, 32144, 40180, 45920, 64288, 80360, 91840, 128576, 160720, 321440, 642880]

約数ペア:

[(1, 642880), (2, 321440), (4, 160720), (5, 128576), (7, 91840), (8, 80360), (10, 64288), (14, 45920), (16, 40180), (20, 32144), (28, 22960), (32, 20090), (35, 18368), (40, 16072), (41, 15680), (49, 13120), (56, 11480), (64, 10045), (70, 9184), (80, 8036), (82, 7840), (98, 6560), (112, 5740), (140, 4592), (160, 4018), (164, 3920), (196, 3280), (205, 3136), (224, 2870), (245, 2624), (280, 2296), (287, 2240), (320, 2009), (328, 1960), (392, 1640), (410, 1568), (448, 1435), (490, 1312), (560, 1148), (574, 1120), (656, 980), (784, 820)]