21820036

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{229}}^1$

素因数の和:364

約数の個数: 48

約数和(自身を含む): 45440640

約数和(自身を除く): 23620604

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 83, 164, 166, 229, 287, 332, 458, 574, 581, 916, 1148, 1162, 1603, 2324, 3206, 3403, 6412, 6806, 9389, 13612, 18778, 19007, 23821, 37556, 38014, 47642, 65723, 76028, 95284, 131446, 133049, 262892, 266098, 532196, 779287, 1558574, 3117148, 5455009, 10910018, 21820036]

約数ペア:

[(1, 21820036), (2, 10910018), (4, 5455009), (7, 3117148), (14, 1558574), (28, 779287), (41, 532196), (82, 266098), (83, 262892), (164, 133049), (166, 131446), (229, 95284), (287, 76028), (332, 65723), (458, 47642), (574, 38014), (581, 37556), (916, 23821), (1148, 19007), (1162, 18778), (1603, 13612), (2324, 9389), (3206, 6806), (3403, 6412)]