21631840

素因数分解:

$2^5\times 5^1\times {\mathrm{353}}^1\times {\mathrm{383}}^1$

素因数の和:751

約数の個数: 48

約数和(自身を含む): 51383808

約数和(自身を除く): 29751968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 353, 383, 706, 766, 1412, 1532, 1765, 1915, 2824, 3064, 3530, 3830, 5648, 6128, 7060, 7660, 11296, 12256, 14120, 15320, 28240, 30640, 56480, 61280, 135199, 270398, 540796, 675995, 1081592, 1351990, 2163184, 2703980, 4326368, 5407960, 10815920, 21631840]

約数ペア:

[(1, 21631840), (2, 10815920), (4, 5407960), (5, 4326368), (8, 2703980), (10, 2163184), (16, 1351990), (20, 1081592), (32, 675995), (40, 540796), (80, 270398), (160, 135199), (353, 61280), (383, 56480), (706, 30640), (766, 28240), (1412, 15320), (1532, 14120), (1765, 12256), (1915, 11296), (2824, 7660), (3064, 7060), (3530, 6128), (3830, 5648)]