21651540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{21227}}^1$

素因数の和:21256

約数の個数: 48

約数和(自身を含む): 64193472

約数和(自身を除く): 42541932

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 21227, 42454, 63681, 84908, 106135, 127362, 212270, 254724, 318405, 360859, 424540, 636810, 721718, 1082577, 1273620, 1443436, 1804295, 2165154, 3608590, 4330308, 5412885, 7217180, 10825770, 21651540]

約数ペア:

[(1, 21651540), (2, 10825770), (3, 7217180), (4, 5412885), (5, 4330308), (6, 3608590), (10, 2165154), (12, 1804295), (15, 1443436), (17, 1273620), (20, 1082577), (30, 721718), (34, 636810), (51, 424540), (60, 360859), (68, 318405), (85, 254724), (102, 212270), (170, 127362), (204, 106135), (255, 84908), (340, 63681), (510, 42454), (1020, 21227)]