1281420

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{113}}^1$

素因数の和:141

約数の個数: 120

約数和(自身を含む): 4634784

約数和(自身を除く): 3353364

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 81, 84, 90, 105, 108, 113, 126, 135, 140, 162, 180, 189, 210, 226, 252, 270, 315, 324, 339, 378, 405, 420, 452, 540, 565, 567, 630, 678, 756, 791, 810, 945, 1017, 1130, 1134, 1260, 1356, 1582, 1620, 1695, 1890, 2034, 2260, 2268, 2373, 2835, 3051, 3164, 3390, 3780, 3955, 4068, 4746, 5085, 5670, 6102, 6780, 7119, 7910, 9153, 9492, 10170, 11340, 11865, 12204, 14238, 15255, 15820, 18306, 20340, 21357, 23730, 28476, 30510, 35595, 36612, 42714, 45765, 47460, 61020, 64071, 71190, 85428, 91530, 106785, 128142, 142380, 183060, 213570, 256284, 320355, 427140, 640710, 1281420]

約数ペア:

[(1, 1281420), (2, 640710), (3, 427140), (4, 320355), (5, 256284), (6, 213570), (7, 183060), (9, 142380), (10, 128142), (12, 106785), (14, 91530), (15, 85428), (18, 71190), (20, 64071), (21, 61020), (27, 47460), (28, 45765), (30, 42714), (35, 36612), (36, 35595), (42, 30510), (45, 28476), (54, 23730), (60, 21357), (63, 20340), (70, 18306), (81, 15820), (84, 15255), (90, 14238), (105, 12204), (108, 11865), (113, 11340), (126, 10170), (135, 9492), (140, 9153), (162, 7910), (180, 7119), (189, 6780), (210, 6102), (226, 5670), (252, 5085), (270, 4746), (315, 4068), (324, 3955), (339, 3780), (378, 3390), (405, 3164), (420, 3051), (452, 2835), (540, 2373), (565, 2268), (567, 2260), (630, 2034), (678, 1890), (756, 1695), (791, 1620), (810, 1582), (945, 1356), (1017, 1260), (1130, 1134)]