19531953

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:254

約数の個数: 48

約数和(自身を含む): 33985536

約数和(自身を除く): 14453583

約数列:

[1, 3, 7, 9, 21, 31, 63, 73, 93, 137, 217, 219, 279, 411, 511, 651, 657, 959, 1233, 1533, 1953, 2263, 2877, 4247, 4599, 6789, 8631, 10001, 12741, 15841, 20367, 29729, 30003, 38223, 47523, 70007, 89187, 90009, 142569, 210021, 267561, 310031, 630063, 930093, 2170217, 2790279, 6510651, 19531953]

約数ペア:

[(1, 19531953), (3, 6510651), (7, 2790279), (9, 2170217), (21, 930093), (31, 630063), (63, 310031), (73, 267561), (93, 210021), (137, 142569), (217, 90009), (219, 89187), (279, 70007), (411, 47523), (511, 38223), (651, 30003), (657, 29729), (959, 20367), (1233, 15841), (1533, 12741), (1953, 10001), (2263, 8631), (2877, 6789), (4247, 4599)]