18690490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1$

素因数の和:116

約数の個数: 128

約数和(自身を含む): 46448640

約数和(自身を除く): 27758150

約数列:

[1, 2, 5, 7, 10, 13, 14, 19, 23, 26, 35, 38, 46, 47, 65, 70, 91, 94, 95, 115, 130, 133, 161, 182, 190, 230, 235, 247, 266, 299, 322, 329, 437, 455, 470, 494, 598, 611, 658, 665, 805, 874, 893, 910, 1081, 1222, 1235, 1330, 1495, 1610, 1645, 1729, 1786, 2093, 2162, 2185, 2470, 2990, 3055, 3059, 3290, 3458, 4186, 4277, 4370, 4465, 5405, 5681, 6110, 6118, 6251, 7567, 8554, 8645, 8930, 10465, 10810, 11362, 11609, 12502, 14053, 15134, 15295, 17290, 20539, 20930, 21385, 23218, 28106, 28405, 30590, 31255, 37835, 39767, 41078, 42770, 56810, 58045, 62510, 70265, 75670, 79534, 81263, 98371, 102695, 116090, 140530, 143773, 162526, 196742, 198835, 205390, 267007, 287546, 397670, 406315, 491855, 534014, 718865, 812630, 983710, 1335035, 1437730, 1869049, 2670070, 3738098, 9345245, 18690490]

約数ペア:

[(1, 18690490), (2, 9345245), (5, 3738098), (7, 2670070), (10, 1869049), (13, 1437730), (14, 1335035), (19, 983710), (23, 812630), (26, 718865), (35, 534014), (38, 491855), (46, 406315), (47, 397670), (65, 287546), (70, 267007), (91, 205390), (94, 198835), (95, 196742), (115, 162526), (130, 143773), (133, 140530), (161, 116090), (182, 102695), (190, 98371), (230, 81263), (235, 79534), (247, 75670), (266, 70265), (299, 62510), (322, 58045), (329, 56810), (437, 42770), (455, 41078), (470, 39767), (494, 37835), (598, 31255), (611, 30590), (658, 28405), (665, 28106), (805, 23218), (874, 21385), (893, 20930), (910, 20539), (1081, 17290), (1222, 15295), (1235, 15134), (1330, 14053), (1495, 12502), (1610, 11609), (1645, 11362), (1729, 10810), (1786, 10465), (2093, 8930), (2162, 8645), (2185, 8554), (2470, 7567), (2990, 6251), (3055, 6118), (3059, 6110), (3290, 5681), (3458, 5405), (4186, 4465), (4277, 4370)]