20165354800

素因数分解:

$2^4\times 5^2\times {\mathrm{181}}^1\times {\mathrm{223}}^1\times {\mathrm{1249}}^1$

素因数の和:1671

約数の個数: 120

約数和(自身を含む): 48972560000

約数和(自身を除く): 28807205200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 181, 200, 223, 362, 400, 446, 724, 892, 905, 1115, 1249, 1448, 1784, 1810, 2230, 2498, 2896, 3568, 3620, 4460, 4525, 4996, 5575, 6245, 7240, 8920, 9050, 9992, 11150, 12490, 14480, 17840, 18100, 19984, 22300, 24980, 31225, 36200, 40363, 44600, 49960, 62450, 72400, 80726, 89200, 99920, 124900, 161452, 201815, 226069, 249800, 278527, 322904, 403630, 452138, 499600, 557054, 645808, 807260, 904276, 1009075, 1114108, 1130345, 1392635, 1614520, 1808552, 2018150, 2228216, 2260690, 2785270, 3229040, 3617104, 4036300, 4456432, 4521380, 5570540, 5651725, 6963175, 8072600, 9042760, 11141080, 11303450, 13926350, 16145200, 18085520, 22282160, 22606900, 27852700, 45213800, 50413387, 55705400, 90427600, 100826774, 111410800, 201653548, 252066935, 403307096, 504133870, 806614192, 1008267740, 1260334675, 2016535480, 2520669350, 4033070960, 5041338700, 10082677400, 20165354800]

約数ペア:

[(1, 20165354800), (2, 10082677400), (4, 5041338700), (5, 4033070960), (8, 2520669350), (10, 2016535480), (16, 1260334675), (20, 1008267740), (25, 806614192), (40, 504133870), (50, 403307096), (80, 252066935), (100, 201653548), (181, 111410800), (200, 100826774), (223, 90427600), (362, 55705400), (400, 50413387), (446, 45213800), (724, 27852700), (892, 22606900), (905, 22282160), (1115, 18085520), (1249, 16145200), (1448, 13926350), (1784, 11303450), (1810, 11141080), (2230, 9042760), (2498, 8072600), (2896, 6963175), (3568, 5651725), (3620, 5570540), (4460, 4521380), (4525, 4456432), (4996, 4036300), (5575, 3617104), (6245, 3229040), (7240, 2785270), (8920, 2260690), (9050, 2228216), (9992, 2018150), (11150, 1808552), (12490, 1614520), (14480, 1392635), (17840, 1130345), (18100, 1114108), (19984, 1009075), (22300, 904276), (24980, 807260), (31225, 645808), (36200, 557054), (40363, 499600), (44600, 452138), (49960, 403630), (62450, 322904), (72400, 278527), (80726, 249800), (89200, 226069), (99920, 201815), (124900, 161452)]