280967570

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^2\times {\mathrm{173}}^1$

素因数の和:268

約数の個数: 72

約数和(自身を含む): 569143908

約数和(自身を除く): 288176338

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 169, 173, 310, 338, 346, 403, 806, 845, 865, 961, 1690, 1730, 1922, 2015, 2249, 4030, 4498, 4805, 5239, 5363, 9610, 10478, 10726, 11245, 12493, 22490, 24986, 26195, 26815, 29237, 52390, 53630, 58474, 62465, 69719, 124930, 139438, 146185, 162409, 166253, 292370, 324818, 332506, 348595, 697190, 812045, 831265, 906347, 1624090, 1662530, 1812694, 2161289, 4322578, 4531735, 9063470, 10806445, 21612890, 28096757, 56193514, 140483785, 280967570]

約数ペア:

[(1, 280967570), (2, 140483785), (5, 56193514), (10, 28096757), (13, 21612890), (26, 10806445), (31, 9063470), (62, 4531735), (65, 4322578), (130, 2161289), (155, 1812694), (169, 1662530), (173, 1624090), (310, 906347), (338, 831265), (346, 812045), (403, 697190), (806, 348595), (845, 332506), (865, 324818), (961, 292370), (1690, 166253), (1730, 162409), (1922, 146185), (2015, 139438), (2249, 124930), (4030, 69719), (4498, 62465), (4805, 58474), (5239, 53630), (5363, 52390), (9610, 29237), (10478, 26815), (10726, 26195), (11245, 24986), (12493, 22490)]