21530530

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{311}}^1$

素因数の和:391

約数の個数: 64

約数和(自身を含む): 47443968

約数和(自身を除く): 25913438

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 43, 46, 70, 86, 115, 161, 215, 230, 301, 311, 322, 430, 602, 622, 805, 989, 1505, 1555, 1610, 1978, 2177, 3010, 3110, 4354, 4945, 6923, 7153, 9890, 10885, 13373, 13846, 14306, 21770, 26746, 34615, 35765, 50071, 66865, 69230, 71530, 93611, 100142, 133730, 187222, 250355, 307579, 468055, 500710, 615158, 936110, 1537895, 2153053, 3075790, 4306106, 10765265, 21530530]

約数ペア:

[(1, 21530530), (2, 10765265), (5, 4306106), (7, 3075790), (10, 2153053), (14, 1537895), (23, 936110), (35, 615158), (43, 500710), (46, 468055), (70, 307579), (86, 250355), (115, 187222), (161, 133730), (215, 100142), (230, 93611), (301, 71530), (311, 69230), (322, 66865), (430, 50071), (602, 35765), (622, 34615), (805, 26746), (989, 21770), (1505, 14306), (1555, 13846), (1610, 13373), (1978, 10885), (2177, 9890), (3010, 7153), (3110, 6923), (4354, 4945)]