20439650

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{5309}}^1$

素因数の和:5339

約数の個数: 48

約数和(自身を含む): 47407680

約数和(自身を除く): 26968030

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 25, 35, 50, 55, 70, 77, 110, 154, 175, 275, 350, 385, 550, 770, 1925, 3850, 5309, 10618, 26545, 37163, 53090, 58399, 74326, 116798, 132725, 185815, 265450, 291995, 371630, 408793, 583990, 817586, 929075, 1459975, 1858150, 2043965, 2919950, 4087930, 10219825, 20439650]

約数ペア:

[(1, 20439650), (2, 10219825), (5, 4087930), (7, 2919950), (10, 2043965), (11, 1858150), (14, 1459975), (22, 929075), (25, 817586), (35, 583990), (50, 408793), (55, 371630), (70, 291995), (77, 265450), (110, 185815), (154, 132725), (175, 116798), (275, 74326), (350, 58399), (385, 53090), (550, 37163), (770, 26545), (1925, 10618), (3850, 5309)]