81538830

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{643}}^1\times {\mathrm{1409}}^1$

素因数の和:2065

約数の個数: 48

約数和(自身を含む): 212481360

約数和(自身を除く): 130942530

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 643, 1286, 1409, 1929, 2818, 3215, 3858, 4227, 5787, 6430, 7045, 8454, 9645, 11574, 12681, 14090, 19290, 21135, 25362, 28935, 42270, 57870, 63405, 126810, 905987, 1811974, 2717961, 4529935, 5435922, 8153883, 9059870, 13589805, 16307766, 27179610, 40769415, 81538830]

約数ペア:

[(1, 81538830), (2, 40769415), (3, 27179610), (5, 16307766), (6, 13589805), (9, 9059870), (10, 8153883), (15, 5435922), (18, 4529935), (30, 2717961), (45, 1811974), (90, 905987), (643, 126810), (1286, 63405), (1409, 57870), (1929, 42270), (2818, 28935), (3215, 25362), (3858, 21135), (4227, 19290), (5787, 14090), (6430, 12681), (7045, 11574), (8454, 9645)]