19974344

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{1289}}^1$

素因数の和:1457

約数の個数: 32

約数和(自身を含む): 40635000

約数和(自身を除く): 20660656

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 149, 298, 596, 1192, 1289, 1937, 2578, 3874, 5156, 7748, 10312, 15496, 16757, 33514, 67028, 134056, 192061, 384122, 768244, 1536488, 2496793, 4993586, 9987172, 19974344]

約数ペア:

[(1, 19974344), (2, 9987172), (4, 4993586), (8, 2496793), (13, 1536488), (26, 768244), (52, 384122), (104, 192061), (149, 134056), (298, 67028), (596, 33514), (1192, 16757), (1289, 15496), (1937, 10312), (2578, 7748), (3874, 5156)]