18910899

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{421}}^1$

素因数の和:488

約数の個数: 48

約数和(自身を含む): 33705984

約数和(自身を除く): 14795085

約数列:

[1, 3, 7, 9, 21, 23, 31, 63, 69, 93, 161, 207, 217, 279, 421, 483, 651, 713, 1263, 1449, 1953, 2139, 2947, 3789, 4991, 6417, 8841, 9683, 13051, 14973, 26523, 29049, 39153, 44919, 67781, 87147, 91357, 117459, 203343, 274071, 300173, 610029, 822213, 900519, 2101211, 2701557, 6303633, 18910899]

約数ペア:

[(1, 18910899), (3, 6303633), (7, 2701557), (9, 2101211), (21, 900519), (23, 822213), (31, 610029), (63, 300173), (69, 274071), (93, 203343), (161, 117459), (207, 91357), (217, 87147), (279, 67781), (421, 44919), (483, 39153), (651, 29049), (713, 26523), (1263, 14973), (1449, 13051), (1953, 9683), (2139, 8841), (2947, 6417), (3789, 4991)]