21842135

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{491}}^1$

素因数の和:575

約数の個数: 32

約数和(自身を含む): 31739904

約数和(自身を除く): 9897769

約数列:

[1, 5, 7, 31, 35, 41, 155, 205, 217, 287, 491, 1085, 1271, 1435, 2455, 3437, 6355, 8897, 15221, 17185, 20131, 44485, 76105, 100655, 106547, 140917, 532735, 624061, 704585, 3120305, 4368427, 21842135]

約数ペア:

[(1, 21842135), (5, 4368427), (7, 3120305), (31, 704585), (35, 624061), (41, 532735), (155, 140917), (205, 106547), (217, 100655), (287, 76105), (491, 44485), (1085, 20131), (1271, 17185), (1435, 15221), (2455, 8897), (3437, 6355)]