31578741

素因数分解:

$3^4\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1$

素因数の和:136

約数の個数: 60

約数和(自身を含む): 53491680

約数和(自身を除く): 21912939

約数列:

[1, 3, 9, 17, 19, 27, 51, 57, 71, 81, 153, 171, 213, 289, 323, 459, 513, 639, 867, 969, 1207, 1349, 1377, 1539, 1917, 2601, 2907, 3621, 4047, 5491, 5751, 7803, 8721, 10863, 12141, 16473, 20519, 22933, 23409, 26163, 32589, 36423, 49419, 61557, 68799, 97767, 109269, 148257, 184671, 206397, 389861, 444771, 554013, 619191, 1169583, 1662039, 1857573, 3508749, 10526247, 31578741]

約数ペア:

[(1, 31578741), (3, 10526247), (9, 3508749), (17, 1857573), (19, 1662039), (27, 1169583), (51, 619191), (57, 554013), (71, 444771), (81, 389861), (153, 206397), (171, 184671), (213, 148257), (289, 109269), (323, 97767), (459, 68799), (513, 61557), (639, 49419), (867, 36423), (969, 32589), (1207, 26163), (1349, 23409), (1377, 22933), (1539, 20519), (1917, 16473), (2601, 12141), (2907, 10863), (3621, 8721), (4047, 7803), (5491, 5751)]