30851440

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{20297}}^1$

素因数の和:20329

約数の個数: 40

約数和(自身を含む): 75508560

約数和(自身を除く): 44657120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 20297, 40594, 81188, 101485, 162376, 202970, 324752, 385643, 405940, 771286, 811880, 1542572, 1623760, 1928215, 3085144, 3856430, 6170288, 7712860, 15425720, 30851440]

約数ペア:

[(1, 30851440), (2, 15425720), (4, 7712860), (5, 6170288), (8, 3856430), (10, 3085144), (16, 1928215), (19, 1623760), (20, 1542572), (38, 811880), (40, 771286), (76, 405940), (80, 385643), (95, 324752), (152, 202970), (190, 162376), (304, 101485), (380, 81188), (760, 40594), (1520, 20297)]