20716254

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{397}}^1$

素因数の和:641

約数の個数: 48

約数和(自身を含む): 48676992

約数和(自身を除く): 27960738

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 223, 234, 397, 446, 669, 794, 1191, 1338, 2007, 2382, 2899, 3573, 4014, 5161, 5798, 7146, 8697, 10322, 15483, 17394, 26091, 30966, 46449, 52182, 88531, 92898, 177062, 265593, 531186, 796779, 1150903, 1593558, 2301806, 3452709, 6905418, 10358127, 20716254]

約数ペア:

[(1, 20716254), (2, 10358127), (3, 6905418), (6, 3452709), (9, 2301806), (13, 1593558), (18, 1150903), (26, 796779), (39, 531186), (78, 265593), (117, 177062), (223, 92898), (234, 88531), (397, 52182), (446, 46449), (669, 30966), (794, 26091), (1191, 17394), (1338, 15483), (2007, 10322), (2382, 8697), (2899, 7146), (3573, 5798), (4014, 5161)]