18895120

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{401}}^1$

素因数の和:464

約数の個数: 80

約数和(自身を含む): 47854080

約数和(自身を除く): 28958960

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 38, 40, 62, 76, 80, 95, 124, 152, 155, 190, 248, 304, 310, 380, 401, 496, 589, 620, 760, 802, 1178, 1240, 1520, 1604, 2005, 2356, 2480, 2945, 3208, 4010, 4712, 5890, 6416, 7619, 8020, 9424, 11780, 12431, 15238, 16040, 23560, 24862, 30476, 32080, 38095, 47120, 49724, 60952, 62155, 76190, 99448, 121904, 124310, 152380, 198896, 236189, 248620, 304760, 472378, 497240, 609520, 944756, 994480, 1180945, 1889512, 2361890, 3779024, 4723780, 9447560, 18895120]

約数ペア:

[(1, 18895120), (2, 9447560), (4, 4723780), (5, 3779024), (8, 2361890), (10, 1889512), (16, 1180945), (19, 994480), (20, 944756), (31, 609520), (38, 497240), (40, 472378), (62, 304760), (76, 248620), (80, 236189), (95, 198896), (124, 152380), (152, 124310), (155, 121904), (190, 99448), (248, 76190), (304, 62155), (310, 60952), (380, 49724), (401, 47120), (496, 38095), (589, 32080), (620, 30476), (760, 24862), (802, 23560), (1178, 16040), (1240, 15238), (1520, 12431), (1604, 11780), (2005, 9424), (2356, 8020), (2480, 7619), (2945, 6416), (3208, 5890), (4010, 4712)]