20745540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{5011}}^1$

素因数の和:5049

約数の個数: 72

約数和(自身を含む): 65677248

約数和(自身を除く): 44931708

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 90, 92, 115, 138, 180, 207, 230, 276, 345, 414, 460, 690, 828, 1035, 1380, 2070, 4140, 5011, 10022, 15033, 20044, 25055, 30066, 45099, 50110, 60132, 75165, 90198, 100220, 115253, 150330, 180396, 225495, 230506, 300660, 345759, 450990, 461012, 576265, 691518, 901980, 1037277, 1152530, 1383036, 1728795, 2074554, 2305060, 3457590, 4149108, 5186385, 6915180, 10372770, 20745540]

約数ペア:

[(1, 20745540), (2, 10372770), (3, 6915180), (4, 5186385), (5, 4149108), (6, 3457590), (9, 2305060), (10, 2074554), (12, 1728795), (15, 1383036), (18, 1152530), (20, 1037277), (23, 901980), (30, 691518), (36, 576265), (45, 461012), (46, 450990), (60, 345759), (69, 300660), (90, 230506), (92, 225495), (115, 180396), (138, 150330), (180, 115253), (207, 100220), (230, 90198), (276, 75165), (345, 60132), (414, 50110), (460, 45099), (690, 30066), (828, 25055), (1035, 20044), (1380, 15033), (2070, 10022), (4140, 5011)]