21561270

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{631}}^1$

素因数の和:725

約数の個数: 64

約数和(自身を含む): 55696896

約数和(自身を除く): 34135626

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 30, 34, 51, 67, 85, 102, 134, 170, 201, 255, 335, 402, 510, 631, 670, 1005, 1139, 1262, 1893, 2010, 2278, 3155, 3417, 3786, 5695, 6310, 6834, 9465, 10727, 11390, 17085, 18930, 21454, 32181, 34170, 42277, 53635, 64362, 84554, 107270, 126831, 160905, 211385, 253662, 321810, 422770, 634155, 718709, 1268310, 1437418, 2156127, 3593545, 4312254, 7187090, 10780635, 21561270]

約数ペア:

[(1, 21561270), (2, 10780635), (3, 7187090), (5, 4312254), (6, 3593545), (10, 2156127), (15, 1437418), (17, 1268310), (30, 718709), (34, 634155), (51, 422770), (67, 321810), (85, 253662), (102, 211385), (134, 160905), (170, 126831), (201, 107270), (255, 84554), (335, 64362), (402, 53635), (510, 42277), (631, 34170), (670, 32181), (1005, 21454), (1139, 18930), (1262, 17085), (1893, 11390), (2010, 10727), (2278, 9465), (3155, 6834), (3417, 6310), (3786, 5695)]