21489291285

素因数分解:

$3^1\times 5^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{379703}}^1$

素因数の和:379743

約数の個数: 64

約数和(自身を含む): 43741900800

約数和(自身を除く): 22252609515

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 49, 55, 77, 105, 147, 165, 231, 245, 343, 385, 539, 735, 1029, 1155, 1617, 1715, 2695, 3773, 5145, 8085, 11319, 18865, 56595, 379703, 1139109, 1898515, 2657921, 4176733, 5695545, 7973763, 12530199, 13289605, 18605447, 20883665, 29237131, 39868815, 55816341, 62650995, 87711393, 93027235, 130238129, 146185655, 204659917, 279081705, 390714387, 438556965, 613979751, 651190645, 1023299585, 1432619419, 1953571935, 3069898755, 4297858257, 7163097095, 21489291285]

約数ペア:

[(1, 21489291285), (3, 7163097095), (5, 4297858257), (7, 3069898755), (11, 1953571935), (15, 1432619419), (21, 1023299585), (33, 651190645), (35, 613979751), (49, 438556965), (55, 390714387), (77, 279081705), (105, 204659917), (147, 146185655), (165, 130238129), (231, 93027235), (245, 87711393), (343, 62650995), (385, 55816341), (539, 39868815), (735, 29237131), (1029, 20883665), (1155, 18605447), (1617, 13289605), (1715, 12530199), (2695, 7973763), (3773, 5695545), (5145, 4176733), (8085, 2657921), (11319, 1898515), (18865, 1139109), (56595, 379703)]