21303774

素因数分解:

$2^1\times 3^2\times {\mathrm{53}}^1\times {\mathrm{137}}^1\times {\mathrm{163}}^1$

素因数の和:361

約数の個数: 48

約数和(自身を含む): 47662992

約数和(自身を除く): 26359218

約数列:

[1, 2, 3, 6, 9, 18, 53, 106, 137, 159, 163, 274, 318, 326, 411, 477, 489, 822, 954, 978, 1233, 1467, 2466, 2934, 7261, 8639, 14522, 17278, 21783, 22331, 25917, 43566, 44662, 51834, 65349, 66993, 77751, 130698, 133986, 155502, 200979, 401958, 1183543, 2367086, 3550629, 7101258, 10651887, 21303774]

約数ペア:

[(1, 21303774), (2, 10651887), (3, 7101258), (6, 3550629), (9, 2367086), (18, 1183543), (53, 401958), (106, 200979), (137, 155502), (159, 133986), (163, 130698), (274, 77751), (318, 66993), (326, 65349), (411, 51834), (477, 44662), (489, 43566), (822, 25917), (954, 22331), (978, 21783), (1233, 17278), (1467, 14522), (2466, 8639), (2934, 7261)]