9800980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:233

約数の個数: 72

約数和(自身を含む): 24447528

約数和(自身を除く): 14646548

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 73, 98, 137, 140, 146, 196, 245, 274, 292, 365, 490, 511, 548, 685, 730, 959, 980, 1022, 1370, 1460, 1918, 2044, 2555, 2740, 3577, 3836, 4795, 5110, 6713, 7154, 9590, 10001, 10220, 13426, 14308, 17885, 19180, 20002, 26852, 33565, 35770, 40004, 50005, 67130, 70007, 71540, 100010, 134260, 140014, 200020, 280028, 350035, 490049, 700070, 980098, 1400140, 1960196, 2450245, 4900490, 9800980]

約数ペア:

[(1, 9800980), (2, 4900490), (4, 2450245), (5, 1960196), (7, 1400140), (10, 980098), (14, 700070), (20, 490049), (28, 350035), (35, 280028), (49, 200020), (70, 140014), (73, 134260), (98, 100010), (137, 71540), (140, 70007), (146, 67130), (196, 50005), (245, 40004), (274, 35770), (292, 33565), (365, 26852), (490, 20002), (511, 19180), (548, 17885), (685, 14308), (730, 13426), (959, 10220), (980, 10001), (1022, 9590), (1370, 7154), (1460, 6713), (1918, 5110), (2044, 4795), (2555, 3836), (2740, 3577)]