21098700

素因数分解:

$2^2\times 3^2\times 5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{197}}^1$

素因数の和:241

約数の個数: 216

約数和(自身を含む): 80432352

約数和(自身を除く): 59333652

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 17, 18, 20, 21, 25, 28, 30, 34, 35, 36, 42, 45, 50, 51, 60, 63, 68, 70, 75, 84, 85, 90, 100, 102, 105, 119, 126, 140, 150, 153, 170, 175, 180, 197, 204, 210, 225, 238, 252, 255, 300, 306, 315, 340, 350, 357, 394, 420, 425, 450, 476, 510, 525, 591, 595, 612, 630, 700, 714, 765, 788, 850, 900, 985, 1020, 1050, 1071, 1182, 1190, 1260, 1275, 1379, 1428, 1530, 1575, 1700, 1773, 1785, 1970, 2100, 2142, 2364, 2380, 2550, 2758, 2955, 2975, 3060, 3150, 3349, 3546, 3570, 3825, 3940, 4137, 4284, 4925, 5100, 5355, 5516, 5910, 5950, 6300, 6698, 6895, 7092, 7140, 7650, 8274, 8865, 8925, 9850, 10047, 10710, 11820, 11900, 12411, 13396, 13790, 14775, 15300, 16548, 16745, 17730, 17850, 19700, 20094, 20685, 21420, 23443, 24822, 26775, 27580, 29550, 30141, 33490, 34475, 35460, 35700, 40188, 41370, 44325, 46886, 49644, 50235, 53550, 59100, 60282, 62055, 66980, 68950, 70329, 82740, 83725, 88650, 93772, 100470, 103425, 107100, 117215, 120564, 124110, 137900, 140658, 150705, 167450, 177300, 200940, 206850, 210987, 234430, 248220, 251175, 281316, 301410, 310275, 334900, 351645, 413700, 421974, 468860, 502350, 586075, 602820, 620550, 703290, 753525, 843948, 1004700, 1054935, 1172150, 1241100, 1406580, 1507050, 1758225, 2109870, 2344300, 3014100, 3516450, 4219740, 5274675, 7032900, 10549350, 21098700]

約数ペア:

[(1, 21098700), (2, 10549350), (3, 7032900), (4, 5274675), (5, 4219740), (6, 3516450), (7, 3014100), (9, 2344300), (10, 2109870), (12, 1758225), (14, 1507050), (15, 1406580), (17, 1241100), (18, 1172150), (20, 1054935), (21, 1004700), (25, 843948), (28, 753525), (30, 703290), (34, 620550), (35, 602820), (36, 586075), (42, 502350), (45, 468860), (50, 421974), (51, 413700), (60, 351645), (63, 334900), (68, 310275), (70, 301410), (75, 281316), (84, 251175), (85, 248220), (90, 234430), (100, 210987), (102, 206850), (105, 200940), (119, 177300), (126, 167450), (140, 150705), (150, 140658), (153, 137900), (170, 124110), (175, 120564), (180, 117215), (197, 107100), (204, 103425), (210, 100470), (225, 93772), (238, 88650), (252, 83725), (255, 82740), (300, 70329), (306, 68950), (315, 66980), (340, 62055), (350, 60282), (357, 59100), (394, 53550), (420, 50235), (425, 49644), (450, 46886), (476, 44325), (510, 41370), (525, 40188), (591, 35700), (595, 35460), (612, 34475), (630, 33490), (700, 30141), (714, 29550), (765, 27580), (788, 26775), (850, 24822), (900, 23443), (985, 21420), (1020, 20685), (1050, 20094), (1071, 19700), (1182, 17850), (1190, 17730), (1260, 16745), (1275, 16548), (1379, 15300), (1428, 14775), (1530, 13790), (1575, 13396), (1700, 12411), (1773, 11900), (1785, 11820), (1970, 10710), (2100, 10047), (2142, 9850), (2364, 8925), (2380, 8865), (2550, 8274), (2758, 7650), (2955, 7140), (2975, 7092), (3060, 6895), (3150, 6698), (3349, 6300), (3546, 5950), (3570, 5910), (3825, 5516), (3940, 5355), (4137, 5100), (4284, 4925)]