21067960

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{1459}}^1$

素因数の和:1508

約数の個数: 48

約数和(自身を含む): 50063400

約数和(自身を除く): 28995440

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 361, 380, 722, 760, 1444, 1459, 1805, 2888, 2918, 3610, 5836, 7220, 7295, 11672, 14440, 14590, 27721, 29180, 55442, 58360, 110884, 138605, 221768, 277210, 526699, 554420, 1053398, 1108840, 2106796, 2633495, 4213592, 5266990, 10533980, 21067960]

約数ペア:

[(1, 21067960), (2, 10533980), (4, 5266990), (5, 4213592), (8, 2633495), (10, 2106796), (19, 1108840), (20, 1053398), (38, 554420), (40, 526699), (76, 277210), (95, 221768), (152, 138605), (190, 110884), (361, 58360), (380, 55442), (722, 29180), (760, 27721), (1444, 14590), (1459, 14440), (1805, 11672), (2888, 7295), (2918, 7220), (3610, 5836)]