80906540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{28289}}^1$

素因数の和:28322

約数の個数: 48

約数和(自身を含む): 199614240

約数和(自身を除く): 118707700

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 28289, 56578, 113156, 141445, 282890, 311179, 367757, 565780, 622358, 735514, 1244716, 1471028, 1555895, 1838785, 3111790, 3677570, 4045327, 6223580, 7355140, 8090654, 16181308, 20226635, 40453270, 80906540]

約数ペア:

[(1, 80906540), (2, 40453270), (4, 20226635), (5, 16181308), (10, 8090654), (11, 7355140), (13, 6223580), (20, 4045327), (22, 3677570), (26, 3111790), (44, 1838785), (52, 1555895), (55, 1471028), (65, 1244716), (110, 735514), (130, 622358), (143, 565780), (220, 367757), (260, 311179), (286, 282890), (572, 141445), (715, 113156), (1430, 56578), (2860, 28289)]