21219870

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{2731}}^1$

素因数の和:2785

約数の個数: 64

約数和(自身を含む): 59798016

約数和(自身を除く): 38578146

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 37, 42, 70, 74, 105, 111, 185, 210, 222, 259, 370, 518, 555, 777, 1110, 1295, 1554, 2590, 2731, 3885, 5462, 7770, 8193, 13655, 16386, 19117, 27310, 38234, 40965, 57351, 81930, 95585, 101047, 114702, 191170, 202094, 286755, 303141, 505235, 573510, 606282, 707329, 1010470, 1414658, 1515705, 2121987, 3031410, 3536645, 4243974, 7073290, 10609935, 21219870]

約数ペア:

[(1, 21219870), (2, 10609935), (3, 7073290), (5, 4243974), (6, 3536645), (7, 3031410), (10, 2121987), (14, 1515705), (15, 1414658), (21, 1010470), (30, 707329), (35, 606282), (37, 573510), (42, 505235), (70, 303141), (74, 286755), (105, 202094), (111, 191170), (185, 114702), (210, 101047), (222, 95585), (259, 81930), (370, 57351), (518, 40965), (555, 38234), (777, 27310), (1110, 19117), (1295, 16386), (1554, 13655), (2590, 8193), (2731, 7770), (3885, 5462)]