20187886720

素因数分解:

$2^7\times 5^1\times {\mathrm{37}}^1\times {\mathrm{223}}^1\times {\mathrm{3823}}^1$

素因数の和:4102

約数の個数: 128

約数和(自身を含む): 49801328640

約数和(自身を除く): 29613441920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 64, 74, 80, 128, 148, 160, 185, 223, 296, 320, 370, 446, 592, 640, 740, 892, 1115, 1184, 1480, 1784, 2230, 2368, 2960, 3568, 3823, 4460, 4736, 5920, 7136, 7646, 8251, 8920, 11840, 14272, 15292, 16502, 17840, 19115, 23680, 28544, 30584, 33004, 35680, 38230, 41255, 61168, 66008, 71360, 76460, 82510, 122336, 132016, 141451, 142720, 152920, 165020, 244672, 264032, 282902, 305840, 330040, 489344, 528064, 565804, 611680, 660080, 707255, 852529, 1056128, 1131608, 1223360, 1320160, 1414510, 1705058, 2263216, 2446720, 2640320, 2829020, 3410116, 4262645, 4526432, 5280640, 5658040, 6820232, 8525290, 9052864, 11316080, 13640464, 17050580, 18105728, 22632160, 27280928, 31543573, 34101160, 45264320, 54561856, 63087146, 68202320, 90528640, 109123712, 126174292, 136404640, 157717865, 252348584, 272809280, 315435730, 504697168, 545618560, 630871460, 1009394336, 1261742920, 2018788672, 2523485840, 4037577344, 5046971680, 10093943360, 20187886720]

約数ペア:

[(1, 20187886720), (2, 10093943360), (4, 5046971680), (5, 4037577344), (8, 2523485840), (10, 2018788672), (16, 1261742920), (20, 1009394336), (32, 630871460), (37, 545618560), (40, 504697168), (64, 315435730), (74, 272809280), (80, 252348584), (128, 157717865), (148, 136404640), (160, 126174292), (185, 109123712), (223, 90528640), (296, 68202320), (320, 63087146), (370, 54561856), (446, 45264320), (592, 34101160), (640, 31543573), (740, 27280928), (892, 22632160), (1115, 18105728), (1184, 17050580), (1480, 13640464), (1784, 11316080), (2230, 9052864), (2368, 8525290), (2960, 6820232), (3568, 5658040), (3823, 5280640), (4460, 4526432), (4736, 4262645), (5920, 3410116), (7136, 2829020), (7646, 2640320), (8251, 2446720), (8920, 2263216), (11840, 1705058), (14272, 1414510), (15292, 1320160), (16502, 1223360), (17840, 1131608), (19115, 1056128), (23680, 852529), (28544, 707255), (30584, 660080), (33004, 611680), (35680, 565804), (38230, 528064), (41255, 489344), (61168, 330040), (66008, 305840), (71360, 282902), (76460, 264032), (82510, 244672), (122336, 165020), (132016, 152920), (141451, 142720)]