21157066

素因数分解:

$2^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^2$

素因数の和:151

約数の個数: 48

約数和(自身を含む): 39697920

約数和(自身を除く): 18540854

約数列:

[1, 2, 7, 14, 29, 31, 41, 58, 62, 82, 203, 217, 287, 406, 434, 574, 899, 1189, 1271, 1681, 1798, 2378, 2542, 3362, 6293, 8323, 8897, 11767, 12586, 16646, 17794, 23534, 36859, 48749, 52111, 73718, 97498, 104222, 258013, 341243, 364777, 516026, 682486, 729554, 1511219, 3022438, 10578533, 21157066]

約数ペア:

[(1, 21157066), (2, 10578533), (7, 3022438), (14, 1511219), (29, 729554), (31, 682486), (41, 516026), (58, 364777), (62, 341243), (82, 258013), (203, 104222), (217, 97498), (287, 73718), (406, 52111), (434, 48749), (574, 36859), (899, 23534), (1189, 17794), (1271, 16646), (1681, 12586), (1798, 11767), (2378, 8897), (2542, 8323), (3362, 6293)]