400900370

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{3209}}^1$

素因数の和:3291

約数の個数: 48

約数和(自身を含む): 803257560

約数和(自身を除く): 402357190

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 961, 1922, 2015, 3209, 4030, 4805, 6418, 9610, 12493, 16045, 24986, 32090, 41717, 62465, 83434, 99479, 124930, 198958, 208585, 417170, 497395, 994790, 1293227, 2586454, 3083849, 6167698, 6466135, 12932270, 15419245, 30838490, 40090037, 80180074, 200450185, 400900370]

約数ペア:

[(1, 400900370), (2, 200450185), (5, 80180074), (10, 40090037), (13, 30838490), (26, 15419245), (31, 12932270), (62, 6466135), (65, 6167698), (130, 3083849), (155, 2586454), (310, 1293227), (403, 994790), (806, 497395), (961, 417170), (1922, 208585), (2015, 198958), (3209, 124930), (4030, 99479), (4805, 83434), (6418, 62465), (9610, 41717), (12493, 32090), (16045, 24986)]