21039992

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{929}}^1$

素因数の和:1103

約数の個数: 32

約数和(自身を含む): 41850000

約数和(自身を除く): 20810008

約数列:

[1, 2, 4, 8, 19, 38, 76, 149, 152, 298, 596, 929, 1192, 1858, 2831, 3716, 5662, 7432, 11324, 17651, 22648, 35302, 70604, 138421, 141208, 276842, 553684, 1107368, 2629999, 5259998, 10519996, 21039992]

約数ペア:

[(1, 21039992), (2, 10519996), (4, 5259998), (8, 2629999), (19, 1107368), (38, 553684), (76, 276842), (149, 141208), (152, 138421), (298, 70604), (596, 35302), (929, 22648), (1192, 17651), (1858, 11324), (2831, 7432), (3716, 5662)]