19381680

素因数分解:

$2^4\times 3^5\times 5^1\times {\mathrm{997}}^1$

素因数の和:1025

約数の個数: 120

約数和(自身を含む): 67568592

約数和(自身を除く): 48186912

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 81, 90, 108, 120, 135, 144, 162, 180, 216, 240, 243, 270, 324, 360, 405, 432, 486, 540, 648, 720, 810, 972, 997, 1080, 1215, 1296, 1620, 1944, 1994, 2160, 2430, 2991, 3240, 3888, 3988, 4860, 4985, 5982, 6480, 7976, 8973, 9720, 9970, 11964, 14955, 15952, 17946, 19440, 19940, 23928, 26919, 29910, 35892, 39880, 44865, 47856, 53838, 59820, 71784, 79760, 80757, 89730, 107676, 119640, 134595, 143568, 161514, 179460, 215352, 239280, 242271, 269190, 323028, 358920, 403785, 430704, 484542, 538380, 646056, 717840, 807570, 969084, 1076760, 1211355, 1292112, 1615140, 1938168, 2153520, 2422710, 3230280, 3876336, 4845420, 6460560, 9690840, 19381680]

約数ペア:

[(1, 19381680), (2, 9690840), (3, 6460560), (4, 4845420), (5, 3876336), (6, 3230280), (8, 2422710), (9, 2153520), (10, 1938168), (12, 1615140), (15, 1292112), (16, 1211355), (18, 1076760), (20, 969084), (24, 807570), (27, 717840), (30, 646056), (36, 538380), (40, 484542), (45, 430704), (48, 403785), (54, 358920), (60, 323028), (72, 269190), (80, 242271), (81, 239280), (90, 215352), (108, 179460), (120, 161514), (135, 143568), (144, 134595), (162, 119640), (180, 107676), (216, 89730), (240, 80757), (243, 79760), (270, 71784), (324, 59820), (360, 53838), (405, 47856), (432, 44865), (486, 39880), (540, 35892), (648, 29910), (720, 26919), (810, 23928), (972, 19940), (997, 19440), (1080, 17946), (1215, 15952), (1296, 14955), (1620, 11964), (1944, 9970), (1994, 9720), (2160, 8973), (2430, 7976), (2991, 6480), (3240, 5982), (3888, 4985), (3988, 4860)]