20378640

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1$

素因数の和:185

約数の個数: 160

約数和(自身を含む): 68745600

約数和(自身を除く): 48366960

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, 109, 114, 120, 123, 152, 164, 190, 205, 218, 228, 240, 246, 285, 304, 327, 328, 380, 410, 436, 456, 492, 545, 570, 615, 654, 656, 760, 779, 820, 872, 912, 984, 1090, 1140, 1230, 1308, 1520, 1558, 1635, 1640, 1744, 1968, 2071, 2180, 2280, 2337, 2460, 2616, 3116, 3270, 3280, 3895, 4142, 4360, 4469, 4560, 4674, 4920, 5232, 6213, 6232, 6540, 7790, 8284, 8720, 8938, 9348, 9840, 10355, 11685, 12426, 12464, 13080, 13407, 15580, 16568, 17876, 18696, 20710, 22345, 23370, 24852, 26160, 26814, 31065, 31160, 33136, 35752, 37392, 41420, 44690, 46740, 49704, 53628, 62130, 62320, 67035, 71504, 82840, 84911, 89380, 93480, 99408, 107256, 124260, 134070, 165680, 169822, 178760, 186960, 214512, 248520, 254733, 268140, 339644, 357520, 424555, 497040, 509466, 536280, 679288, 849110, 1018932, 1072560, 1273665, 1358576, 1698220, 2037864, 2547330, 3396440, 4075728, 5094660, 6792880, 10189320, 20378640]

約数ペア:

[(1, 20378640), (2, 10189320), (3, 6792880), (4, 5094660), (5, 4075728), (6, 3396440), (8, 2547330), (10, 2037864), (12, 1698220), (15, 1358576), (16, 1273665), (19, 1072560), (20, 1018932), (24, 849110), (30, 679288), (38, 536280), (40, 509466), (41, 497040), (48, 424555), (57, 357520), (60, 339644), (76, 268140), (80, 254733), (82, 248520), (95, 214512), (109, 186960), (114, 178760), (120, 169822), (123, 165680), (152, 134070), (164, 124260), (190, 107256), (205, 99408), (218, 93480), (228, 89380), (240, 84911), (246, 82840), (285, 71504), (304, 67035), (327, 62320), (328, 62130), (380, 53628), (410, 49704), (436, 46740), (456, 44690), (492, 41420), (545, 37392), (570, 35752), (615, 33136), (654, 31160), (656, 31065), (760, 26814), (779, 26160), (820, 24852), (872, 23370), (912, 22345), (984, 20710), (1090, 18696), (1140, 17876), (1230, 16568), (1308, 15580), (1520, 13407), (1558, 13080), (1635, 12464), (1640, 12426), (1744, 11685), (1968, 10355), (2071, 9840), (2180, 9348), (2280, 8938), (2337, 8720), (2460, 8284), (2616, 7790), (3116, 6540), (3270, 6232), (3280, 6213), (3895, 5232), (4142, 4920), (4360, 4674), (4469, 4560)]