981640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1$

素因数の和:142

約数の個数: 64

約数和(自身を含む): 2540160

約数和(自身を除く): 1558520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 23, 40, 44, 46, 55, 88, 92, 97, 110, 115, 184, 194, 220, 230, 253, 388, 440, 460, 485, 506, 776, 920, 970, 1012, 1067, 1265, 1940, 2024, 2134, 2231, 2530, 3880, 4268, 4462, 5060, 5335, 8536, 8924, 10120, 10670, 11155, 17848, 21340, 22310, 24541, 42680, 44620, 49082, 89240, 98164, 122705, 196328, 245410, 490820, 981640]

約数ペア:

[(1, 981640), (2, 490820), (4, 245410), (5, 196328), (8, 122705), (10, 98164), (11, 89240), (20, 49082), (22, 44620), (23, 42680), (40, 24541), (44, 22310), (46, 21340), (55, 17848), (88, 11155), (92, 10670), (97, 10120), (110, 8924), (115, 8536), (184, 5335), (194, 5060), (220, 4462), (230, 4268), (253, 3880), (388, 2530), (440, 2231), (460, 2134), (485, 2024), (506, 1940), (776, 1265), (920, 1067), (970, 1012)]