21000718528

素因数分解:

$2^6\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{271861}}^1$

素因数の和:271961

約数の個数: 56

約数和(自身を含む): 44746310304

約数和(自身を除く): 23745591776

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 64, 68, 71, 136, 142, 272, 284, 544, 568, 1088, 1136, 1207, 2272, 2414, 4544, 4828, 9656, 19312, 38624, 77248, 271861, 543722, 1087444, 2174888, 4349776, 4621637, 8699552, 9243274, 17399104, 18486548, 19302131, 36973096, 38604262, 73946192, 77208524, 147892384, 154417048, 295784768, 308834096, 328136227, 617668192, 656272454, 1235336384, 1312544908, 2625089816, 5250179632, 10500359264, 21000718528]

約数ペア:

[(1, 21000718528), (2, 10500359264), (4, 5250179632), (8, 2625089816), (16, 1312544908), (17, 1235336384), (32, 656272454), (34, 617668192), (64, 328136227), (68, 308834096), (71, 295784768), (136, 154417048), (142, 147892384), (272, 77208524), (284, 73946192), (544, 38604262), (568, 36973096), (1088, 19302131), (1136, 18486548), (1207, 17399104), (2272, 9243274), (2414, 8699552), (4544, 4621637), (4828, 4349776), (9656, 2174888), (19312, 1087444), (38624, 543722), (77248, 271861)]