405968402

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{9721}}^1$

素因数の和:9906

約数の個数: 32

約数和(自身を含む): 737316480

約数和(自身を除く): 331348078

約数列:

[1, 2, 7, 14, 19, 38, 133, 157, 266, 314, 1099, 2198, 2983, 5966, 9721, 19442, 20881, 41762, 68047, 136094, 184699, 369398, 1292893, 1526197, 2585786, 3052394, 10683379, 21366758, 28997743, 57995486, 202984201, 405968402]

約数ペア:

[(1, 405968402), (2, 202984201), (7, 57995486), (14, 28997743), (19, 21366758), (38, 10683379), (133, 3052394), (157, 2585786), (266, 1526197), (314, 1292893), (1099, 369398), (2198, 184699), (2983, 136094), (5966, 68047), (9721, 41762), (19442, 20881)]