209940990

素因数分解:

$2^1\times 3^1\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{271}}^1$

素因数の和:343

約数の個数: 192

約数和(自身を含む): 642981888

約数和(自身を除く): 433040898

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 17, 21, 30, 31, 34, 35, 42, 49, 51, 62, 70, 85, 93, 98, 102, 105, 119, 147, 155, 170, 186, 210, 217, 238, 245, 255, 271, 294, 310, 357, 434, 465, 490, 510, 527, 542, 595, 651, 714, 735, 813, 833, 930, 1054, 1085, 1190, 1302, 1355, 1470, 1519, 1581, 1626, 1666, 1785, 1897, 2170, 2499, 2635, 2710, 3038, 3162, 3255, 3570, 3689, 3794, 4065, 4165, 4557, 4607, 4998, 5270, 5691, 6510, 7378, 7595, 7905, 8130, 8330, 8401, 9114, 9214, 9485, 11067, 11382, 12495, 13279, 13821, 15190, 15810, 16802, 18445, 18970, 22134, 22785, 23035, 24990, 25203, 25823, 26558, 27642, 28455, 32249, 36890, 39837, 42005, 45570, 46070, 50406, 51646, 55335, 56910, 58807, 64498, 66395, 69105, 77469, 79674, 84010, 96747, 110670, 117614, 126015, 129115, 132790, 138210, 142817, 154938, 161245, 176421, 193494, 199185, 225743, 252030, 258230, 285634, 294035, 322490, 352842, 387345, 398370, 411649, 428451, 451486, 483735, 588070, 677229, 714085, 774690, 823298, 856902, 882105, 967470, 999719, 1128715, 1234947, 1354458, 1428170, 1764210, 1999438, 2058245, 2142255, 2257430, 2469894, 2999157, 3386145, 4116490, 4284510, 4998595, 5998314, 6174735, 6772290, 6998033, 9997190, 12349470, 13996066, 14995785, 20994099, 29991570, 34990165, 41988198, 69980330, 104970495, 209940990]

約数ペア:

[(1, 209940990), (2, 104970495), (3, 69980330), (5, 41988198), (6, 34990165), (7, 29991570), (10, 20994099), (14, 14995785), (15, 13996066), (17, 12349470), (21, 9997190), (30, 6998033), (31, 6772290), (34, 6174735), (35, 5998314), (42, 4998595), (49, 4284510), (51, 4116490), (62, 3386145), (70, 2999157), (85, 2469894), (93, 2257430), (98, 2142255), (102, 2058245), (105, 1999438), (119, 1764210), (147, 1428170), (155, 1354458), (170, 1234947), (186, 1128715), (210, 999719), (217, 967470), (238, 882105), (245, 856902), (255, 823298), (271, 774690), (294, 714085), (310, 677229), (357, 588070), (434, 483735), (465, 451486), (490, 428451), (510, 411649), (527, 398370), (542, 387345), (595, 352842), (651, 322490), (714, 294035), (735, 285634), (813, 258230), (833, 252030), (930, 225743), (1054, 199185), (1085, 193494), (1190, 176421), (1302, 161245), (1355, 154938), (1470, 142817), (1519, 138210), (1581, 132790), (1626, 129115), (1666, 126015), (1785, 117614), (1897, 110670), (2170, 96747), (2499, 84010), (2635, 79674), (2710, 77469), (3038, 69105), (3162, 66395), (3255, 64498), (3570, 58807), (3689, 56910), (3794, 55335), (4065, 51646), (4165, 50406), (4557, 46070), (4607, 45570), (4998, 42005), (5270, 39837), (5691, 36890), (6510, 32249), (7378, 28455), (7595, 27642), (7905, 26558), (8130, 25823), (8330, 25203), (8401, 24990), (9114, 23035), (9214, 22785), (9485, 22134), (11067, 18970), (11382, 18445), (12495, 16802), (13279, 15810), (13821, 15190)]