19798155

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{389}}^1$

素因数の和:445

約数の個数: 64

約数和(自身を含む): 39312000

約数和(自身を除く): 19513845

約数列:

[1, 3, 5, 9, 13, 15, 27, 29, 39, 45, 65, 87, 117, 135, 145, 195, 261, 351, 377, 389, 435, 585, 783, 1131, 1167, 1305, 1755, 1885, 1945, 3393, 3501, 3915, 5057, 5655, 5835, 10179, 10503, 11281, 15171, 16965, 17505, 25285, 33843, 45513, 50895, 52515, 56405, 75855, 101529, 136539, 146653, 169215, 227565, 304587, 439959, 507645, 682695, 733265, 1319877, 1522935, 2199795, 3959631, 6599385, 19798155]

約数ペア:

[(1, 19798155), (3, 6599385), (5, 3959631), (9, 2199795), (13, 1522935), (15, 1319877), (27, 733265), (29, 682695), (39, 507645), (45, 439959), (65, 304587), (87, 227565), (117, 169215), (135, 146653), (145, 136539), (195, 101529), (261, 75855), (351, 56405), (377, 52515), (389, 50895), (435, 45513), (585, 33843), (783, 25285), (1131, 17505), (1167, 16965), (1305, 15171), (1755, 11281), (1885, 10503), (1945, 10179), (3393, 5835), (3501, 5655), (3915, 5057)]