21980808

素因数分解:

$2^3\times 3^6\times {\mathrm{3769}}^1$

素因数の和:3793

約数の個数: 56

約数和(自身を含む): 61809150

約数和(自身を除く): 39828342

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 162, 216, 243, 324, 486, 648, 729, 972, 1458, 1944, 2916, 3769, 5832, 7538, 11307, 15076, 22614, 30152, 33921, 45228, 67842, 90456, 101763, 135684, 203526, 271368, 305289, 407052, 610578, 814104, 915867, 1221156, 1831734, 2442312, 2747601, 3663468, 5495202, 7326936, 10990404, 21980808]

約数ペア:

[(1, 21980808), (2, 10990404), (3, 7326936), (4, 5495202), (6, 3663468), (8, 2747601), (9, 2442312), (12, 1831734), (18, 1221156), (24, 915867), (27, 814104), (36, 610578), (54, 407052), (72, 305289), (81, 271368), (108, 203526), (162, 135684), (216, 101763), (243, 90456), (324, 67842), (486, 45228), (648, 33921), (729, 30152), (972, 22614), (1458, 15076), (1944, 11307), (2916, 7538), (3769, 5832)]