21325448

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{307}}^1\times {\mathrm{457}}^1$

素因数の和:789

約数の個数: 32

約数和(自身を含む): 42319200

約数和(自身を除く): 20993752

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 307, 457, 614, 914, 1228, 1828, 2456, 3656, 5833, 8683, 11666, 17366, 23332, 34732, 46664, 69464, 140299, 280598, 561196, 1122392, 2665681, 5331362, 10662724, 21325448]

約数ペア:

[(1, 21325448), (2, 10662724), (4, 5331362), (8, 2665681), (19, 1122392), (38, 561196), (76, 280598), (152, 140299), (307, 69464), (457, 46664), (614, 34732), (914, 23332), (1228, 17366), (1828, 11666), (2456, 8683), (3656, 5833)]