81220636

素因数分解:

$2^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{419}}^1$

素因数の和:503

約数の個数: 72

約数和(自身を含む): 176964480

約数和(自身を除く): 95743844

約数列:

[1, 2, 4, 7, 14, 23, 28, 43, 46, 49, 86, 92, 98, 161, 172, 196, 301, 322, 419, 602, 644, 838, 989, 1127, 1204, 1676, 1978, 2107, 2254, 2933, 3956, 4214, 4508, 5866, 6923, 8428, 9637, 11732, 13846, 18017, 19274, 20531, 27692, 36034, 38548, 41062, 48461, 67459, 72068, 82124, 96922, 126119, 134918, 193844, 252238, 269836, 414391, 472213, 504476, 828782, 882833, 944426, 1657564, 1765666, 1888852, 2900737, 3531332, 5801474, 11602948, 20305159, 40610318, 81220636]

約数ペア:

[(1, 81220636), (2, 40610318), (4, 20305159), (7, 11602948), (14, 5801474), (23, 3531332), (28, 2900737), (43, 1888852), (46, 1765666), (49, 1657564), (86, 944426), (92, 882833), (98, 828782), (161, 504476), (172, 472213), (196, 414391), (301, 269836), (322, 252238), (419, 193844), (602, 134918), (644, 126119), (838, 96922), (989, 82124), (1127, 72068), (1204, 67459), (1676, 48461), (1978, 41062), (2107, 38548), (2254, 36034), (2933, 27692), (3956, 20531), (4214, 19274), (4508, 18017), (5866, 13846), (6923, 11732), (8428, 9637)]