21043160

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{257}}^1$

素因数の和:380

約数の個数: 64

約数和(自身を含む): 50155200

約数和(自身を除く): 29112040

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 89, 92, 115, 178, 184, 230, 257, 356, 445, 460, 514, 712, 890, 920, 1028, 1285, 1780, 2047, 2056, 2570, 3560, 4094, 5140, 5911, 8188, 10235, 10280, 11822, 16376, 20470, 22873, 23644, 29555, 40940, 45746, 47288, 59110, 81880, 91492, 114365, 118220, 182984, 228730, 236440, 457460, 526079, 914920, 1052158, 2104316, 2630395, 4208632, 5260790, 10521580, 21043160]

約数ペア:

[(1, 21043160), (2, 10521580), (4, 5260790), (5, 4208632), (8, 2630395), (10, 2104316), (20, 1052158), (23, 914920), (40, 526079), (46, 457460), (89, 236440), (92, 228730), (115, 182984), (178, 118220), (184, 114365), (230, 91492), (257, 81880), (356, 59110), (445, 47288), (460, 45746), (514, 40940), (712, 29555), (890, 23644), (920, 22873), (1028, 20470), (1285, 16376), (1780, 11822), (2047, 10280), (2056, 10235), (2570, 8188), (3560, 5911), (4094, 5140)]