21084768

素因数分解:

$2^5\times 3^2\times {\mathrm{179}}^1\times {\mathrm{409}}^1$

素因数の和:604

約数の個数: 72

約数和(自身を含む): 60442200

約数和(自身を除く): 39357432

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 144, 179, 288, 358, 409, 537, 716, 818, 1074, 1227, 1432, 1611, 1636, 2148, 2454, 2864, 3222, 3272, 3681, 4296, 4908, 5728, 6444, 6544, 7362, 8592, 9816, 12888, 13088, 14724, 17184, 19632, 25776, 29448, 39264, 51552, 58896, 73211, 117792, 146422, 219633, 292844, 439266, 585688, 658899, 878532, 1171376, 1317798, 1757064, 2342752, 2635596, 3514128, 5271192, 7028256, 10542384, 21084768]

約数ペア:

[(1, 21084768), (2, 10542384), (3, 7028256), (4, 5271192), (6, 3514128), (8, 2635596), (9, 2342752), (12, 1757064), (16, 1317798), (18, 1171376), (24, 878532), (32, 658899), (36, 585688), (48, 439266), (72, 292844), (96, 219633), (144, 146422), (179, 117792), (288, 73211), (358, 58896), (409, 51552), (537, 39264), (716, 29448), (818, 25776), (1074, 19632), (1227, 17184), (1432, 14724), (1611, 13088), (1636, 12888), (2148, 9816), (2454, 8592), (2864, 7362), (3222, 6544), (3272, 6444), (3681, 5728), (4296, 4908)]