21470640

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{653}}^1$

素因数の和:806

約数の個数: 80

約数和(自身を含む): 67147488

約数和(自身を除く): 45676848

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 137, 240, 274, 411, 548, 653, 685, 822, 1096, 1306, 1370, 1644, 1959, 2055, 2192, 2612, 2740, 3265, 3288, 3918, 4110, 5224, 5480, 6530, 6576, 7836, 8220, 9795, 10448, 10960, 13060, 15672, 16440, 19590, 26120, 31344, 32880, 39180, 52240, 78360, 89461, 156720, 178922, 268383, 357844, 447305, 536766, 715688, 894610, 1073532, 1341915, 1431376, 1789220, 2147064, 2683830, 3578440, 4294128, 5367660, 7156880, 10735320, 21470640]

約数ペア:

[(1, 21470640), (2, 10735320), (3, 7156880), (4, 5367660), (5, 4294128), (6, 3578440), (8, 2683830), (10, 2147064), (12, 1789220), (15, 1431376), (16, 1341915), (20, 1073532), (24, 894610), (30, 715688), (40, 536766), (48, 447305), (60, 357844), (80, 268383), (120, 178922), (137, 156720), (240, 89461), (274, 78360), (411, 52240), (548, 39180), (653, 32880), (685, 31344), (822, 26120), (1096, 19590), (1306, 16440), (1370, 15672), (1644, 13060), (1959, 10960), (2055, 10448), (2192, 9795), (2612, 8220), (2740, 7836), (3265, 6576), (3288, 6530), (3918, 5480), (4110, 5224)]