21178770

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{317}}^1$

素因数の和:475

約数の個数: 64

約数和(自身を含む): 54400896

約数和(自身を除く): 33222126

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 30, 34, 51, 85, 102, 131, 170, 255, 262, 317, 393, 510, 634, 655, 786, 951, 1310, 1585, 1902, 1965, 2227, 3170, 3930, 4454, 4755, 5389, 6681, 9510, 10778, 11135, 13362, 16167, 22270, 26945, 32334, 33405, 41527, 53890, 66810, 80835, 83054, 124581, 161670, 207635, 249162, 415270, 622905, 705959, 1245810, 1411918, 2117877, 3529795, 4235754, 7059590, 10589385, 21178770]

約数ペア:

[(1, 21178770), (2, 10589385), (3, 7059590), (5, 4235754), (6, 3529795), (10, 2117877), (15, 1411918), (17, 1245810), (30, 705959), (34, 622905), (51, 415270), (85, 249162), (102, 207635), (131, 161670), (170, 124581), (255, 83054), (262, 80835), (317, 66810), (393, 53890), (510, 41527), (634, 33405), (655, 32334), (786, 26945), (951, 22270), (1310, 16167), (1585, 13362), (1902, 11135), (1965, 10778), (2227, 9510), (3170, 6681), (3930, 5389), (4454, 4755)]