31920018

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{307}}^1$

素因数の和:399

約数の個数: 64

約数和(自身を含む): 72855552

約数和(自身を除く): 40935534

約数列:

[1, 2, 3, 6, 13, 26, 31, 39, 43, 62, 78, 86, 93, 129, 186, 258, 307, 403, 559, 614, 806, 921, 1118, 1209, 1333, 1677, 1842, 2418, 2666, 3354, 3991, 3999, 7982, 7998, 9517, 11973, 13201, 17329, 19034, 23946, 26402, 28551, 34658, 39603, 51987, 57102, 79206, 103974, 123721, 171613, 247442, 343226, 371163, 409231, 514839, 742326, 818462, 1029678, 1227693, 2455386, 5320003, 10640006, 15960009, 31920018]

約数ペア:

[(1, 31920018), (2, 15960009), (3, 10640006), (6, 5320003), (13, 2455386), (26, 1227693), (31, 1029678), (39, 818462), (43, 742326), (62, 514839), (78, 409231), (86, 371163), (93, 343226), (129, 247442), (186, 171613), (258, 123721), (307, 103974), (403, 79206), (559, 57102), (614, 51987), (806, 39603), (921, 34658), (1118, 28551), (1209, 26402), (1333, 23946), (1677, 19034), (1842, 17329), (2418, 13201), (2666, 11973), (3354, 9517), (3991, 7998), (3999, 7982)]