21155814

素因数分解:

$2^1\times 3^2\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{373}}^1$

素因数の和:541

約数の個数: 48

約数和(自身を含む): 48308832

約数和(自身を除く): 27153018

約数列:

[1, 2, 3, 6, 9, 18, 23, 46, 69, 137, 138, 207, 274, 373, 411, 414, 746, 822, 1119, 1233, 2238, 2466, 3151, 3357, 6302, 6714, 8579, 9453, 17158, 18906, 25737, 28359, 51101, 51474, 56718, 77211, 102202, 153303, 154422, 306606, 459909, 919818, 1175323, 2350646, 3525969, 7051938, 10577907, 21155814]

約数ペア:

[(1, 21155814), (2, 10577907), (3, 7051938), (6, 3525969), (9, 2350646), (18, 1175323), (23, 919818), (46, 459909), (69, 306606), (137, 154422), (138, 153303), (207, 102202), (274, 77211), (373, 56718), (411, 51474), (414, 51101), (746, 28359), (822, 25737), (1119, 18906), (1233, 17158), (2238, 9453), (2466, 8579), (3151, 6714), (3357, 6302)]