81715998

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{7877}}^1$

素因数の和:7921

約数の個数: 64

約数和(自身を含む): 211760640

約数和(自身を除く): 130044642

約数列:

[1, 2, 3, 6, 7, 13, 14, 19, 21, 26, 38, 39, 42, 57, 78, 91, 114, 133, 182, 247, 266, 273, 399, 494, 546, 741, 798, 1482, 1729, 3458, 5187, 7877, 10374, 15754, 23631, 47262, 55139, 102401, 110278, 149663, 165417, 204802, 299326, 307203, 330834, 448989, 614406, 716807, 897978, 1047641, 1433614, 1945619, 2095282, 2150421, 3142923, 3891238, 4300842, 5836857, 6285846, 11673714, 13619333, 27238666, 40857999, 81715998]

約数ペア:

[(1, 81715998), (2, 40857999), (3, 27238666), (6, 13619333), (7, 11673714), (13, 6285846), (14, 5836857), (19, 4300842), (21, 3891238), (26, 3142923), (38, 2150421), (39, 2095282), (42, 1945619), (57, 1433614), (78, 1047641), (91, 897978), (114, 716807), (133, 614406), (182, 448989), (247, 330834), (266, 307203), (273, 299326), (399, 204802), (494, 165417), (546, 149663), (741, 110278), (798, 102401), (1482, 55139), (1729, 47262), (3458, 23631), (5187, 15754), (7877, 10374)]