20521440

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{14251}}^1$

素因数の和:14272

約数の個数: 72

約数和(自身を含む): 70034328

約数和(自身を除く): 49512888

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720, 1440, 14251, 28502, 42753, 57004, 71255, 85506, 114008, 128259, 142510, 171012, 213765, 228016, 256518, 285020, 342024, 427530, 456032, 513036, 570040, 641295, 684048, 855060, 1026072, 1140080, 1282590, 1368096, 1710120, 2052144, 2280160, 2565180, 3420240, 4104288, 5130360, 6840480, 10260720, 20521440]

約数ペア:

[(1, 20521440), (2, 10260720), (3, 6840480), (4, 5130360), (5, 4104288), (6, 3420240), (8, 2565180), (9, 2280160), (10, 2052144), (12, 1710120), (15, 1368096), (16, 1282590), (18, 1140080), (20, 1026072), (24, 855060), (30, 684048), (32, 641295), (36, 570040), (40, 513036), (45, 456032), (48, 427530), (60, 342024), (72, 285020), (80, 256518), (90, 228016), (96, 213765), (120, 171012), (144, 142510), (160, 128259), (180, 114008), (240, 85506), (288, 71255), (360, 57004), (480, 42753), (720, 28502), (1440, 14251)]