200420990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{251}}^1$

素因数の和:354

約数の個数: 128

約数和(自身を含む): 485968896

約数和(自身を除く): 285547906

約数列:

[1, 2, 5, 7, 10, 11, 14, 17, 22, 34, 35, 55, 61, 70, 77, 85, 110, 119, 122, 154, 170, 187, 238, 251, 305, 374, 385, 427, 502, 595, 610, 671, 770, 854, 935, 1037, 1190, 1255, 1309, 1342, 1757, 1870, 2074, 2135, 2510, 2618, 2761, 3355, 3514, 4267, 4270, 4697, 5185, 5522, 6545, 6710, 7259, 8534, 8785, 9394, 10370, 11407, 13090, 13805, 14518, 15311, 17570, 19327, 21335, 22814, 23485, 27610, 29869, 30622, 36295, 38654, 42670, 46937, 46970, 57035, 59738, 72590, 76555, 79849, 93874, 96635, 107177, 114070, 149345, 153110, 159698, 168421, 193270, 214354, 234685, 260287, 298690, 328559, 336842, 399245, 469370, 520574, 535885, 657118, 798490, 842105, 1071770, 1178947, 1301435, 1642795, 1684210, 1822009, 2357894, 2602870, 2863157, 3285590, 3644018, 5726314, 5894735, 9110045, 11789470, 14315785, 18220090, 20042099, 28631570, 40084198, 100210495, 200420990]

約数ペア:

[(1, 200420990), (2, 100210495), (5, 40084198), (7, 28631570), (10, 20042099), (11, 18220090), (14, 14315785), (17, 11789470), (22, 9110045), (34, 5894735), (35, 5726314), (55, 3644018), (61, 3285590), (70, 2863157), (77, 2602870), (85, 2357894), (110, 1822009), (119, 1684210), (122, 1642795), (154, 1301435), (170, 1178947), (187, 1071770), (238, 842105), (251, 798490), (305, 657118), (374, 535885), (385, 520574), (427, 469370), (502, 399245), (595, 336842), (610, 328559), (671, 298690), (770, 260287), (854, 234685), (935, 214354), (1037, 193270), (1190, 168421), (1255, 159698), (1309, 153110), (1342, 149345), (1757, 114070), (1870, 107177), (2074, 96635), (2135, 93874), (2510, 79849), (2618, 76555), (2761, 72590), (3355, 59738), (3514, 57035), (4267, 46970), (4270, 46937), (4697, 42670), (5185, 38654), (5522, 36295), (6545, 30622), (6710, 29869), (7259, 27610), (8534, 23485), (8785, 22814), (9394, 21335), (10370, 19327), (11407, 17570), (13090, 15311), (13805, 14518)]