19638945

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{149}}^1$

素因数の和:290

約数の個数: 48

約数和(自身を含む): 35802000

約数和(自身を除く): 16163055

約数列:

[1, 3, 5, 9, 15, 29, 45, 87, 101, 145, 149, 261, 303, 435, 447, 505, 745, 909, 1305, 1341, 1515, 2235, 2929, 4321, 4545, 6705, 8787, 12963, 14645, 15049, 21605, 26361, 38889, 43935, 45147, 64815, 75245, 131805, 135441, 194445, 225735, 436421, 677205, 1309263, 2182105, 3927789, 6546315, 19638945]

約数ペア:

[(1, 19638945), (3, 6546315), (5, 3927789), (9, 2182105), (15, 1309263), (29, 677205), (45, 436421), (87, 225735), (101, 194445), (145, 135441), (149, 131805), (261, 75245), (303, 64815), (435, 45147), (447, 43935), (505, 38889), (745, 26361), (909, 21605), (1305, 15049), (1341, 14645), (1515, 12963), (2235, 8787), (2929, 6705), (4321, 4545)]