213949538

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:172

約数の個数: 72

約数和(自身を含む): 389168640

約数和(自身を除く): 175219102

約数列:

[1, 2, 11, 19, 22, 31, 38, 62, 79, 121, 158, 209, 242, 341, 361, 418, 589, 682, 722, 869, 1178, 1501, 1738, 2299, 2449, 3002, 3751, 3971, 4598, 4898, 6479, 7502, 7942, 9559, 11191, 12958, 16511, 19118, 22382, 26939, 28519, 33022, 43681, 46531, 53878, 57038, 71269, 87362, 93062, 123101, 142538, 181621, 246202, 296329, 313709, 363242, 511841, 592658, 627418, 884089, 1023682, 1354111, 1768178, 2708222, 3450799, 5630251, 6901598, 9724979, 11260502, 19449958, 106974769, 213949538]

約数ペア:

[(1, 213949538), (2, 106974769), (11, 19449958), (19, 11260502), (22, 9724979), (31, 6901598), (38, 5630251), (62, 3450799), (79, 2708222), (121, 1768178), (158, 1354111), (209, 1023682), (242, 884089), (341, 627418), (361, 592658), (418, 511841), (589, 363242), (682, 313709), (722, 296329), (869, 246202), (1178, 181621), (1501, 142538), (1738, 123101), (2299, 93062), (2449, 87362), (3002, 71269), (3751, 57038), (3971, 53878), (4598, 46531), (4898, 43681), (6479, 33022), (7502, 28519), (7942, 26939), (9559, 22382), (11191, 19118), (12958, 16511)]