21131841640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1451}}^1\times {\mathrm{4001}}^1$

素因数の和:5483

約数の個数: 128

約数和(自身を含む): 58573912320

約数和(自身を除く): 37442070680

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1451, 1820, 2902, 3640, 4001, 5804, 7255, 8002, 10157, 11608, 14510, 16004, 18863, 20005, 20314, 28007, 29020, 32008, 37726, 40010, 40628, 50785, 52013, 56014, 58040, 75452, 80020, 81256, 94315, 101570, 104026, 112028, 132041, 140035, 150904, 160040, 188630, 203140, 208052, 224056, 260065, 264082, 280070, 364091, 377260, 406280, 416104, 520130, 528164, 560140, 660205, 728182, 754520, 1040260, 1056328, 1120280, 1320410, 1456364, 1820455, 2080520, 2640820, 2912728, 3640910, 5281640, 5805451, 7281820, 11610902, 14563640, 23221804, 29027255, 40638157, 46443608, 58054510, 75470863, 81276314, 116109020, 150941726, 162552628, 203190785, 232218040, 301883452, 325105256, 377354315, 406381570, 528296041, 603766904, 754708630, 812763140, 1056592082, 1509417260, 1625526280, 2113184164, 2641480205, 3018834520, 4226368328, 5282960410, 10565920820, 21131841640]

約数ペア:

[(1, 21131841640), (2, 10565920820), (4, 5282960410), (5, 4226368328), (7, 3018834520), (8, 2641480205), (10, 2113184164), (13, 1625526280), (14, 1509417260), (20, 1056592082), (26, 812763140), (28, 754708630), (35, 603766904), (40, 528296041), (52, 406381570), (56, 377354315), (65, 325105256), (70, 301883452), (91, 232218040), (104, 203190785), (130, 162552628), (140, 150941726), (182, 116109020), (260, 81276314), (280, 75470863), (364, 58054510), (455, 46443608), (520, 40638157), (728, 29027255), (910, 23221804), (1451, 14563640), (1820, 11610902), (2902, 7281820), (3640, 5805451), (4001, 5281640), (5804, 3640910), (7255, 2912728), (8002, 2640820), (10157, 2080520), (11608, 1820455), (14510, 1456364), (16004, 1320410), (18863, 1120280), (20005, 1056328), (20314, 1040260), (28007, 754520), (29020, 728182), (32008, 660205), (37726, 560140), (40010, 528164), (40628, 520130), (50785, 416104), (52013, 406280), (56014, 377260), (58040, 364091), (75452, 280070), (80020, 264082), (81256, 260065), (94315, 224056), (101570, 208052), (104026, 203140), (112028, 188630), (132041, 160040), (140035, 150904)]