21405088

素因数分解:

$2^5\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{229}}^1$

素因数の和:389

約数の個数: 48

約数和(自身を含む): 44513280

約数和(自身を除く): 23108192

約数列:

[1, 2, 4, 8, 16, 23, 32, 46, 92, 127, 184, 229, 254, 368, 458, 508, 736, 916, 1016, 1832, 2032, 2921, 3664, 4064, 5267, 5842, 7328, 10534, 11684, 21068, 23368, 29083, 42136, 46736, 58166, 84272, 93472, 116332, 168544, 232664, 465328, 668909, 930656, 1337818, 2675636, 5351272, 10702544, 21405088]

約数ペア:

[(1, 21405088), (2, 10702544), (4, 5351272), (8, 2675636), (16, 1337818), (23, 930656), (32, 668909), (46, 465328), (92, 232664), (127, 168544), (184, 116332), (229, 93472), (254, 84272), (368, 58166), (458, 46736), (508, 42136), (736, 29083), (916, 23368), (1016, 21068), (1832, 11684), (2032, 10534), (2921, 7328), (3664, 5842), (4064, 5267)]