8239420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{229}}^1\times {\mathrm{257}}^1$

素因数の和:502

約数の個数: 48

約数和(自身を含む): 19938240

約数和(自身を除く): 11698820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 229, 257, 458, 514, 916, 1028, 1145, 1285, 1603, 1799, 2290, 2570, 3206, 3598, 4580, 5140, 6412, 7196, 8015, 8995, 16030, 17990, 32060, 35980, 58853, 117706, 235412, 294265, 411971, 588530, 823942, 1177060, 1647884, 2059855, 4119710, 8239420]

約数ペア:

[(1, 8239420), (2, 4119710), (4, 2059855), (5, 1647884), (7, 1177060), (10, 823942), (14, 588530), (20, 411971), (28, 294265), (35, 235412), (70, 117706), (140, 58853), (229, 35980), (257, 32060), (458, 17990), (514, 16030), (916, 8995), (1028, 8015), (1145, 7196), (1285, 6412), (1603, 5140), (1799, 4580), (2290, 3598), (2570, 3206)]