21407974

素因数分解:

$2^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{787}}^1$

素因数の和:892

約数の個数: 32

約数和(自身を含む): 38580480

約数和(自身を除く): 17172506

約数列:

[1, 2, 7, 14, 29, 58, 67, 134, 203, 406, 469, 787, 938, 1574, 1943, 3886, 5509, 11018, 13601, 22823, 27202, 45646, 52729, 105458, 159761, 319522, 369103, 738206, 1529141, 3058282, 10703987, 21407974]

約数ペア:

[(1, 21407974), (2, 10703987), (7, 3058282), (14, 1529141), (29, 738206), (58, 369103), (67, 319522), (134, 159761), (203, 105458), (406, 52729), (469, 45646), (787, 27202), (938, 22823), (1574, 13601), (1943, 11018), (3886, 5509)]