2784040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{163}}^1$

素因数の和:242

約数の個数: 64

約数和(自身を含む): 7320960

約数和(自身を除く): 4536920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 61, 70, 122, 140, 163, 244, 280, 305, 326, 427, 488, 610, 652, 815, 854, 1141, 1220, 1304, 1630, 1708, 2135, 2282, 2440, 3260, 3416, 4270, 4564, 5705, 6520, 8540, 9128, 9943, 11410, 17080, 19886, 22820, 39772, 45640, 49715, 69601, 79544, 99430, 139202, 198860, 278404, 348005, 397720, 556808, 696010, 1392020, 2784040]

約数ペア:

[(1, 2784040), (2, 1392020), (4, 696010), (5, 556808), (7, 397720), (8, 348005), (10, 278404), (14, 198860), (20, 139202), (28, 99430), (35, 79544), (40, 69601), (56, 49715), (61, 45640), (70, 39772), (122, 22820), (140, 19886), (163, 17080), (244, 11410), (280, 9943), (305, 9128), (326, 8540), (427, 6520), (488, 5705), (610, 4564), (652, 4270), (815, 3416), (854, 3260), (1141, 2440), (1220, 2282), (1304, 2135), (1630, 1708)]