217874972

素因数分解:

$2^2\times 7^3\times {\mathrm{379}}^1\times {\mathrm{419}}^1$

素因数の和:823

約数の個数: 48

約数和(自身を含む): 446880000

約数和(自身を除く): 229005028

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 343, 379, 419, 686, 758, 838, 1372, 1516, 1676, 2653, 2933, 5306, 5866, 10612, 11732, 18571, 20531, 37142, 41062, 74284, 82124, 129997, 143717, 158801, 259994, 287434, 317602, 519988, 574868, 635204, 1111607, 2223214, 4446428, 7781249, 15562498, 31124996, 54468743, 108937486, 217874972]

約数ペア:

[(1, 217874972), (2, 108937486), (4, 54468743), (7, 31124996), (14, 15562498), (28, 7781249), (49, 4446428), (98, 2223214), (196, 1111607), (343, 635204), (379, 574868), (419, 519988), (686, 317602), (758, 287434), (838, 259994), (1372, 158801), (1516, 143717), (1676, 129997), (2653, 82124), (2933, 74284), (5306, 41062), (5866, 37142), (10612, 20531), (11732, 18571)]