18724120

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{347}}^1$

素因数の和:448

約数の個数: 64

約数和(自身を含む): 45100800

約数和(自身を除く): 26376680

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 71, 76, 95, 142, 152, 190, 284, 347, 355, 380, 568, 694, 710, 760, 1349, 1388, 1420, 1735, 2698, 2776, 2840, 3470, 5396, 6593, 6745, 6940, 10792, 13186, 13490, 13880, 24637, 26372, 26980, 32965, 49274, 52744, 53960, 65930, 98548, 123185, 131860, 197096, 246370, 263720, 468103, 492740, 936206, 985480, 1872412, 2340515, 3744824, 4681030, 9362060, 18724120]

約数ペア:

[(1, 18724120), (2, 9362060), (4, 4681030), (5, 3744824), (8, 2340515), (10, 1872412), (19, 985480), (20, 936206), (38, 492740), (40, 468103), (71, 263720), (76, 246370), (95, 197096), (142, 131860), (152, 123185), (190, 98548), (284, 65930), (347, 53960), (355, 52744), (380, 49274), (568, 32965), (694, 26980), (710, 26372), (760, 24637), (1349, 13880), (1388, 13490), (1420, 13186), (1735, 10792), (2698, 6940), (2776, 6745), (2840, 6593), (3470, 5396)]