21746640

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{251}}^1$

素因数の和:305

約数の個数: 120

約数和(自身を含む): 71432928

約数和(自身を除く): 49686288

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 38, 40, 48, 57, 60, 76, 80, 95, 114, 120, 152, 190, 228, 240, 251, 285, 304, 361, 380, 456, 502, 570, 722, 753, 760, 912, 1004, 1083, 1140, 1255, 1444, 1506, 1520, 1805, 2008, 2166, 2280, 2510, 2888, 3012, 3610, 3765, 4016, 4332, 4560, 4769, 5020, 5415, 5776, 6024, 7220, 7530, 8664, 9538, 10040, 10830, 12048, 14307, 14440, 15060, 17328, 19076, 20080, 21660, 23845, 28614, 28880, 30120, 38152, 43320, 47690, 57228, 60240, 71535, 76304, 86640, 90611, 95380, 114456, 143070, 181222, 190760, 228912, 271833, 286140, 362444, 381520, 453055, 543666, 572280, 724888, 906110, 1087332, 1144560, 1359165, 1449776, 1812220, 2174664, 2718330, 3624440, 4349328, 5436660, 7248880, 10873320, 21746640]

約数ペア:

[(1, 21746640), (2, 10873320), (3, 7248880), (4, 5436660), (5, 4349328), (6, 3624440), (8, 2718330), (10, 2174664), (12, 1812220), (15, 1449776), (16, 1359165), (19, 1144560), (20, 1087332), (24, 906110), (30, 724888), (38, 572280), (40, 543666), (48, 453055), (57, 381520), (60, 362444), (76, 286140), (80, 271833), (95, 228912), (114, 190760), (120, 181222), (152, 143070), (190, 114456), (228, 95380), (240, 90611), (251, 86640), (285, 76304), (304, 71535), (361, 60240), (380, 57228), (456, 47690), (502, 43320), (570, 38152), (722, 30120), (753, 28880), (760, 28614), (912, 23845), (1004, 21660), (1083, 20080), (1140, 19076), (1255, 17328), (1444, 15060), (1506, 14440), (1520, 14307), (1805, 12048), (2008, 10830), (2166, 10040), (2280, 9538), (2510, 8664), (2888, 7530), (3012, 7220), (3610, 6024), (3765, 5776), (4016, 5415), (4332, 5020), (4560, 4769)]