251020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1$

素因数の和:190

約数の個数: 48

約数和(自身を含む): 661248

約数和(自身を除く): 410228

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 163, 220, 308, 326, 385, 652, 770, 815, 1141, 1540, 1630, 1793, 2282, 3260, 3586, 4564, 5705, 7172, 8965, 11410, 12551, 17930, 22820, 25102, 35860, 50204, 62755, 125510, 251020]

約数ペア:

[(1, 251020), (2, 125510), (4, 62755), (5, 50204), (7, 35860), (10, 25102), (11, 22820), (14, 17930), (20, 12551), (22, 11410), (28, 8965), (35, 7172), (44, 5705), (55, 4564), (70, 3586), (77, 3260), (110, 2282), (140, 1793), (154, 1630), (163, 1540), (220, 1141), (308, 815), (326, 770), (385, 652)]