579968681620

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^2\times {\mathrm{349}}^1\times {\mathrm{2141}}^1$

素因数の和:2893

約数の個数: 72

約数和(自身を含む): 1228229011800

約数和(自身を除く): 648260330180

約数列:

[1, 2, 4, 5, 10, 20, 197, 349, 394, 698, 788, 985, 1396, 1745, 1970, 2141, 3490, 3940, 4282, 6980, 8564, 10705, 21410, 38809, 42820, 68753, 77618, 137506, 155236, 194045, 275012, 343765, 388090, 421777, 687530, 747209, 776180, 843554, 1375060, 1494418, 1687108, 2108885, 2988836, 3736045, 4217770, 7472090, 8435540, 13544341, 14944180, 27088682, 54177364, 67721705, 83090069, 135443410, 147200173, 166180138, 270886820, 294400346, 332360276, 415450345, 588800692, 736000865, 830900690, 1472001730, 1661801380, 2944003460, 28998434081, 57996868162, 115993736324, 144992170405, 289984340810, 579968681620]

約数ペア:

[(1, 579968681620), (2, 289984340810), (4, 144992170405), (5, 115993736324), (10, 57996868162), (20, 28998434081), (197, 2944003460), (349, 1661801380), (394, 1472001730), (698, 830900690), (788, 736000865), (985, 588800692), (1396, 415450345), (1745, 332360276), (1970, 294400346), (2141, 270886820), (3490, 166180138), (3940, 147200173), (4282, 135443410), (6980, 83090069), (8564, 67721705), (10705, 54177364), (21410, 27088682), (38809, 14944180), (42820, 13544341), (68753, 8435540), (77618, 7472090), (137506, 4217770), (155236, 3736045), (194045, 2988836), (275012, 2108885), (343765, 1687108), (388090, 1494418), (421777, 1375060), (687530, 843554), (747209, 776180)]