220180821

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{211}}^1$

素因数の和:354

約数の個数: 64

約数和(自身を含む): 371220480

約数和(自身を除く): 151039659

約数列:

[1, 3, 7, 17, 21, 37, 51, 79, 111, 119, 211, 237, 259, 357, 553, 629, 633, 777, 1343, 1477, 1659, 1887, 2923, 3587, 4029, 4403, 4431, 7807, 8769, 9401, 10761, 13209, 16669, 20461, 23421, 25109, 28203, 49691, 50007, 54649, 61383, 75327, 116683, 132719, 149073, 163947, 283373, 347837, 350049, 398157, 616753, 850119, 929033, 1043511, 1850259, 1983611, 2787099, 4317271, 5950833, 10484801, 12951813, 31454403, 73393607, 220180821]

約数ペア:

[(1, 220180821), (3, 73393607), (7, 31454403), (17, 12951813), (21, 10484801), (37, 5950833), (51, 4317271), (79, 2787099), (111, 1983611), (119, 1850259), (211, 1043511), (237, 929033), (259, 850119), (357, 616753), (553, 398157), (629, 350049), (633, 347837), (777, 283373), (1343, 163947), (1477, 149073), (1659, 132719), (1887, 116683), (2923, 75327), (3587, 61383), (4029, 54649), (4403, 50007), (4431, 49691), (7807, 28203), (8769, 25109), (9401, 23421), (10761, 20461), (13209, 16669)]