31981845

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1$

素因数の和:115

約数の個数: 128

約数和(自身を含む): 69672960

約数和(自身を除く): 37691115

約数列:

[1, 3, 5, 7, 15, 17, 19, 21, 23, 35, 41, 51, 57, 69, 85, 95, 105, 115, 119, 123, 133, 161, 205, 255, 285, 287, 323, 345, 357, 391, 399, 437, 483, 595, 615, 665, 697, 779, 805, 861, 943, 969, 1173, 1311, 1435, 1615, 1785, 1955, 1995, 2091, 2185, 2261, 2337, 2415, 2737, 2829, 3059, 3485, 3895, 4305, 4715, 4845, 4879, 5453, 5865, 6555, 6601, 6783, 7429, 8211, 9177, 10455, 11305, 11685, 13243, 13685, 14145, 14637, 15295, 16031, 16359, 17917, 19803, 22287, 24395, 27265, 33005, 33915, 37145, 39729, 41055, 45885, 48093, 52003, 53751, 66215, 73185, 80155, 81795, 89585, 92701, 99015, 111435, 112217, 125419, 156009, 198645, 240465, 260015, 268755, 278103, 304589, 336651, 376257, 463505, 561085, 627095, 780045, 913767, 1390515, 1522945, 1683255, 1881285, 2132123, 4568835, 6396369, 10660615, 31981845]

約数ペア:

[(1, 31981845), (3, 10660615), (5, 6396369), (7, 4568835), (15, 2132123), (17, 1881285), (19, 1683255), (21, 1522945), (23, 1390515), (35, 913767), (41, 780045), (51, 627095), (57, 561085), (69, 463505), (85, 376257), (95, 336651), (105, 304589), (115, 278103), (119, 268755), (123, 260015), (133, 240465), (161, 198645), (205, 156009), (255, 125419), (285, 112217), (287, 111435), (323, 99015), (345, 92701), (357, 89585), (391, 81795), (399, 80155), (437, 73185), (483, 66215), (595, 53751), (615, 52003), (665, 48093), (697, 45885), (779, 41055), (805, 39729), (861, 37145), (943, 33915), (969, 33005), (1173, 27265), (1311, 24395), (1435, 22287), (1615, 19803), (1785, 17917), (1955, 16359), (1995, 16031), (2091, 15295), (2185, 14637), (2261, 14145), (2337, 13685), (2415, 13243), (2737, 11685), (2829, 11305), (3059, 10455), (3485, 9177), (3895, 8211), (4305, 7429), (4715, 6783), (4845, 6601), (4879, 6555), (5453, 5865)]