21365120

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{251}}^1$

素因数の和:296

約数の個数: 128

約数和(自身を含む): 61689600

約数和(自身を除く): 40324480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 32, 35, 38, 40, 56, 64, 70, 76, 80, 95, 112, 128, 133, 140, 152, 160, 190, 224, 251, 266, 280, 304, 320, 380, 448, 502, 532, 560, 608, 640, 665, 760, 896, 1004, 1064, 1120, 1216, 1255, 1330, 1520, 1757, 2008, 2128, 2240, 2432, 2510, 2660, 3040, 3514, 4016, 4256, 4480, 4769, 5020, 5320, 6080, 7028, 8032, 8512, 8785, 9538, 10040, 10640, 12160, 14056, 16064, 17024, 17570, 19076, 20080, 21280, 23845, 28112, 32128, 33383, 35140, 38152, 40160, 42560, 47690, 56224, 66766, 70280, 76304, 80320, 85120, 95380, 112448, 133532, 140560, 152608, 160640, 166915, 190760, 224896, 267064, 281120, 305216, 333830, 381520, 534128, 562240, 610432, 667660, 763040, 1068256, 1124480, 1335320, 1526080, 2136512, 2670640, 3052160, 4273024, 5341280, 10682560, 21365120]

約数ペア:

[(1, 21365120), (2, 10682560), (4, 5341280), (5, 4273024), (7, 3052160), (8, 2670640), (10, 2136512), (14, 1526080), (16, 1335320), (19, 1124480), (20, 1068256), (28, 763040), (32, 667660), (35, 610432), (38, 562240), (40, 534128), (56, 381520), (64, 333830), (70, 305216), (76, 281120), (80, 267064), (95, 224896), (112, 190760), (128, 166915), (133, 160640), (140, 152608), (152, 140560), (160, 133532), (190, 112448), (224, 95380), (251, 85120), (266, 80320), (280, 76304), (304, 70280), (320, 66766), (380, 56224), (448, 47690), (502, 42560), (532, 40160), (560, 38152), (608, 35140), (640, 33383), (665, 32128), (760, 28112), (896, 23845), (1004, 21280), (1064, 20080), (1120, 19076), (1216, 17570), (1255, 17024), (1330, 16064), (1520, 14056), (1757, 12160), (2008, 10640), (2128, 10040), (2240, 9538), (2432, 8785), (2510, 8512), (2660, 8032), (3040, 7028), (3514, 6080), (4016, 5320), (4256, 5020), (4480, 4769)]