31681377

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{383}}^1$

素因数の和:510

約数の個数: 48

約数和(自身を含む): 57028608

約数和(自身を除く): 25347231

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 101, 117, 273, 303, 383, 707, 819, 909, 1149, 1313, 2121, 2681, 3447, 3939, 4979, 6363, 8043, 9191, 11817, 14937, 24129, 27573, 34853, 38683, 44811, 82719, 104559, 116049, 270781, 313677, 348147, 502879, 812343, 1508637, 2437029, 3520153, 4525911, 10560459, 31681377]

約数ペア:

[(1, 31681377), (3, 10560459), (7, 4525911), (9, 3520153), (13, 2437029), (21, 1508637), (39, 812343), (63, 502879), (91, 348147), (101, 313677), (117, 270781), (273, 116049), (303, 104559), (383, 82719), (707, 44811), (819, 38683), (909, 34853), (1149, 27573), (1313, 24129), (2121, 14937), (2681, 11817), (3447, 9191), (3939, 8043), (4979, 6363)]