21291239673

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{439}}^1\times {\mathrm{15803}}^1$

素因数の和:16290

約数の個数: 48

約数和(自身を含む): 34713169920

約数和(自身を除く): 13421930247

約数列:

[1, 3, 9, 11, 31, 33, 93, 99, 279, 341, 439, 1023, 1317, 3069, 3951, 4829, 13609, 14487, 15803, 40827, 43461, 47409, 122481, 142227, 149699, 173833, 449097, 489893, 521499, 1347291, 1469679, 1564497, 4409037, 5388823, 6937517, 16166469, 20812551, 48499407, 62437653, 76312687, 215063027, 228938061, 645189081, 686814183, 1935567243, 2365693297, 7097079891, 21291239673]

約数ペア:

[(1, 21291239673), (3, 7097079891), (9, 2365693297), (11, 1935567243), (31, 686814183), (33, 645189081), (93, 228938061), (99, 215063027), (279, 76312687), (341, 62437653), (439, 48499407), (1023, 20812551), (1317, 16166469), (3069, 6937517), (3951, 5388823), (4829, 4409037), (13609, 1564497), (14487, 1469679), (15803, 1347291), (40827, 521499), (43461, 489893), (47409, 449097), (122481, 173833), (142227, 149699)]