21210156

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2819}}^1$

素因数の和:2859

約数の個数: 72

約数和(自身を含む): 61588800

約数和(自身を除く): 40378644

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 19, 22, 33, 36, 38, 44, 57, 66, 76, 99, 114, 132, 171, 198, 209, 228, 342, 396, 418, 627, 684, 836, 1254, 1881, 2508, 2819, 3762, 5638, 7524, 8457, 11276, 16914, 25371, 31009, 33828, 50742, 53561, 62018, 93027, 101484, 107122, 124036, 160683, 186054, 214244, 279081, 321366, 372108, 482049, 558162, 589171, 642732, 964098, 1116324, 1178342, 1767513, 1928196, 2356684, 3535026, 5302539, 7070052, 10605078, 21210156]

約数ペア:

[(1, 21210156), (2, 10605078), (3, 7070052), (4, 5302539), (6, 3535026), (9, 2356684), (11, 1928196), (12, 1767513), (18, 1178342), (19, 1116324), (22, 964098), (33, 642732), (36, 589171), (38, 558162), (44, 482049), (57, 372108), (66, 321366), (76, 279081), (99, 214244), (114, 186054), (132, 160683), (171, 124036), (198, 107122), (209, 101484), (228, 93027), (342, 62018), (396, 53561), (418, 50742), (627, 33828), (684, 31009), (836, 25371), (1254, 16914), (1881, 11276), (2508, 8457), (2819, 7524), (3762, 5638)]