21851900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1$

素因数の和:124

約数の個数: 144

約数和(自身を含む): 59996160

約数和(自身を除く): 38144260

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 25, 28, 31, 35, 38, 50, 53, 62, 70, 76, 95, 100, 106, 124, 133, 140, 155, 175, 190, 212, 217, 265, 266, 310, 350, 371, 380, 434, 475, 530, 532, 589, 620, 665, 700, 742, 775, 868, 950, 1007, 1060, 1085, 1178, 1325, 1330, 1484, 1550, 1643, 1855, 1900, 2014, 2170, 2356, 2650, 2660, 2945, 3100, 3286, 3325, 3710, 4028, 4123, 4340, 5035, 5300, 5425, 5890, 6572, 6650, 7049, 7420, 8215, 8246, 9275, 10070, 10850, 11501, 11780, 13300, 14098, 14725, 16430, 16492, 18550, 20140, 20615, 21700, 23002, 25175, 28196, 29450, 31217, 32860, 35245, 37100, 41075, 41230, 46004, 50350, 57505, 58900, 62434, 70490, 82150, 82460, 100700, 103075, 115010, 124868, 140980, 156085, 164300, 176225, 206150, 218519, 230020, 287525, 312170, 352450, 412300, 437038, 575050, 624340, 704900, 780425, 874076, 1092595, 1150100, 1560850, 2185190, 3121700, 4370380, 5462975, 10925950, 21851900]

約数ペア:

[(1, 21851900), (2, 10925950), (4, 5462975), (5, 4370380), (7, 3121700), (10, 2185190), (14, 1560850), (19, 1150100), (20, 1092595), (25, 874076), (28, 780425), (31, 704900), (35, 624340), (38, 575050), (50, 437038), (53, 412300), (62, 352450), (70, 312170), (76, 287525), (95, 230020), (100, 218519), (106, 206150), (124, 176225), (133, 164300), (140, 156085), (155, 140980), (175, 124868), (190, 115010), (212, 103075), (217, 100700), (265, 82460), (266, 82150), (310, 70490), (350, 62434), (371, 58900), (380, 57505), (434, 50350), (475, 46004), (530, 41230), (532, 41075), (589, 37100), (620, 35245), (665, 32860), (700, 31217), (742, 29450), (775, 28196), (868, 25175), (950, 23002), (1007, 21700), (1060, 20615), (1085, 20140), (1178, 18550), (1325, 16492), (1330, 16430), (1484, 14725), (1550, 14098), (1643, 13300), (1855, 11780), (1900, 11501), (2014, 10850), (2170, 10070), (2356, 9275), (2650, 8246), (2660, 8215), (2945, 7420), (3100, 7049), (3286, 6650), (3325, 6572), (3710, 5890), (4028, 5425), (4123, 5300), (4340, 5035)]