81969470

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{179}}^1\times {\mathrm{181}}^1$

素因数の和:401

約数の個数: 64

約数和(自身を含む): 169827840

約数和(自身を除く): 87858370

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 55, 110, 115, 179, 181, 230, 253, 358, 362, 506, 895, 905, 1265, 1790, 1810, 1969, 1991, 2530, 3938, 3982, 4117, 4163, 8234, 8326, 9845, 9955, 19690, 19910, 20585, 20815, 32399, 41170, 41630, 45287, 45793, 64798, 90574, 91586, 161995, 226435, 228965, 323990, 356389, 452870, 457930, 712778, 745177, 1490354, 1781945, 3563890, 3725885, 7451770, 8196947, 16393894, 40984735, 81969470]

約数ペア:

[(1, 81969470), (2, 40984735), (5, 16393894), (10, 8196947), (11, 7451770), (22, 3725885), (23, 3563890), (46, 1781945), (55, 1490354), (110, 745177), (115, 712778), (179, 457930), (181, 452870), (230, 356389), (253, 323990), (358, 228965), (362, 226435), (506, 161995), (895, 91586), (905, 90574), (1265, 64798), (1790, 45793), (1810, 45287), (1969, 41630), (1991, 41170), (2530, 32399), (3938, 20815), (3982, 20585), (4117, 19910), (4163, 19690), (8234, 9955), (8326, 9845)]