20004720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1$

素因数の和:183

約数の個数: 160

約数和(自身を含む): 67495680

約数和(自身を除く): 47490960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 38, 40, 41, 48, 57, 60, 76, 80, 82, 95, 107, 114, 120, 123, 152, 164, 190, 205, 214, 228, 240, 246, 285, 304, 321, 328, 380, 410, 428, 456, 492, 535, 570, 615, 642, 656, 760, 779, 820, 856, 912, 984, 1070, 1140, 1230, 1284, 1520, 1558, 1605, 1640, 1712, 1968, 2033, 2140, 2280, 2337, 2460, 2568, 3116, 3210, 3280, 3895, 4066, 4280, 4387, 4560, 4674, 4920, 5136, 6099, 6232, 6420, 7790, 8132, 8560, 8774, 9348, 9840, 10165, 11685, 12198, 12464, 12840, 13161, 15580, 16264, 17548, 18696, 20330, 21935, 23370, 24396, 25680, 26322, 30495, 31160, 32528, 35096, 37392, 40660, 43870, 46740, 48792, 52644, 60990, 62320, 65805, 70192, 81320, 83353, 87740, 93480, 97584, 105288, 121980, 131610, 162640, 166706, 175480, 186960, 210576, 243960, 250059, 263220, 333412, 350960, 416765, 487920, 500118, 526440, 666824, 833530, 1000236, 1052880, 1250295, 1333648, 1667060, 2000472, 2500590, 3334120, 4000944, 5001180, 6668240, 10002360, 20004720]

約数ペア:

[(1, 20004720), (2, 10002360), (3, 6668240), (4, 5001180), (5, 4000944), (6, 3334120), (8, 2500590), (10, 2000472), (12, 1667060), (15, 1333648), (16, 1250295), (19, 1052880), (20, 1000236), (24, 833530), (30, 666824), (38, 526440), (40, 500118), (41, 487920), (48, 416765), (57, 350960), (60, 333412), (76, 263220), (80, 250059), (82, 243960), (95, 210576), (107, 186960), (114, 175480), (120, 166706), (123, 162640), (152, 131610), (164, 121980), (190, 105288), (205, 97584), (214, 93480), (228, 87740), (240, 83353), (246, 81320), (285, 70192), (304, 65805), (321, 62320), (328, 60990), (380, 52644), (410, 48792), (428, 46740), (456, 43870), (492, 40660), (535, 37392), (570, 35096), (615, 32528), (642, 31160), (656, 30495), (760, 26322), (779, 25680), (820, 24396), (856, 23370), (912, 21935), (984, 20330), (1070, 18696), (1140, 17548), (1230, 16264), (1284, 15580), (1520, 13161), (1558, 12840), (1605, 12464), (1640, 12198), (1712, 11685), (1968, 10165), (2033, 9840), (2140, 9348), (2280, 8774), (2337, 8560), (2460, 8132), (2568, 7790), (3116, 6420), (3210, 6232), (3280, 6099), (3895, 5136), (4066, 4920), (4280, 4674), (4387, 4560)]