28664580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{491}}^1$

素因数の和:649

約数の個数: 96

約数和(自身を含む): 92574720

約数和(自身を除く): 63910140

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 139, 140, 210, 278, 417, 420, 491, 556, 695, 834, 973, 982, 1390, 1473, 1668, 1946, 1964, 2085, 2455, 2780, 2919, 2946, 3437, 3892, 4170, 4865, 4910, 5838, 5892, 6874, 7365, 8340, 9730, 9820, 10311, 11676, 13748, 14595, 14730, 17185, 19460, 20622, 29190, 29460, 34370, 41244, 51555, 58380, 68249, 68740, 103110, 136498, 204747, 206220, 272996, 341245, 409494, 477743, 682490, 818988, 955486, 1023735, 1364980, 1433229, 1910972, 2047470, 2388715, 2866458, 4094940, 4777430, 5732916, 7166145, 9554860, 14332290, 28664580]

約数ペア:

[(1, 28664580), (2, 14332290), (3, 9554860), (4, 7166145), (5, 5732916), (6, 4777430), (7, 4094940), (10, 2866458), (12, 2388715), (14, 2047470), (15, 1910972), (20, 1433229), (21, 1364980), (28, 1023735), (30, 955486), (35, 818988), (42, 682490), (60, 477743), (70, 409494), (84, 341245), (105, 272996), (139, 206220), (140, 204747), (210, 136498), (278, 103110), (417, 68740), (420, 68249), (491, 58380), (556, 51555), (695, 41244), (834, 34370), (973, 29460), (982, 29190), (1390, 20622), (1473, 19460), (1668, 17185), (1946, 14730), (1964, 14595), (2085, 13748), (2455, 11676), (2780, 10311), (2919, 9820), (2946, 9730), (3437, 8340), (3892, 7365), (4170, 6874), (4865, 5892), (4910, 5838)]