399589876

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{6871}}^1$

素因数の和:6980

約数の個数: 48

約数和(自身を含む): 837394432

約数和(自身を除く): 437804556

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 67, 124, 134, 217, 268, 434, 469, 868, 938, 1876, 2077, 4154, 6871, 8308, 13742, 14539, 27484, 29078, 48097, 58156, 96194, 192388, 213001, 426002, 460357, 852004, 920714, 1491007, 1841428, 2982014, 3222499, 5964028, 6444998, 12889996, 14271067, 28542134, 57084268, 99897469, 199794938, 399589876]

約数ペア:

[(1, 399589876), (2, 199794938), (4, 99897469), (7, 57084268), (14, 28542134), (28, 14271067), (31, 12889996), (62, 6444998), (67, 5964028), (124, 3222499), (134, 2982014), (217, 1841428), (268, 1491007), (434, 920714), (469, 852004), (868, 460357), (938, 426002), (1876, 213001), (2077, 192388), (4154, 96194), (6871, 58156), (8308, 48097), (13742, 29078), (14539, 27484)]