405090

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{643}}^1$

素因数の和:663

約数の個数: 48

約数和(自身を含む): 1205568

約数和(自身を除く): 800478

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 63, 70, 90, 105, 126, 210, 315, 630, 643, 1286, 1929, 3215, 3858, 4501, 5787, 6430, 9002, 9645, 11574, 13503, 19290, 22505, 27006, 28935, 40509, 45010, 57870, 67515, 81018, 135030, 202545, 405090]

約数ペア:

[(1, 405090), (2, 202545), (3, 135030), (5, 81018), (6, 67515), (7, 57870), (9, 45010), (10, 40509), (14, 28935), (15, 27006), (18, 22505), (21, 19290), (30, 13503), (35, 11574), (42, 9645), (45, 9002), (63, 6430), (70, 5787), (90, 4501), (105, 3858), (126, 3215), (210, 1929), (315, 1286), (630, 643)]