21031248

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{1181}}^1$

素因数の和:1252

約数の個数: 80

約数和(自身を含む): 63317376

約数和(自身を除く): 42286128

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 48, 53, 56, 84, 106, 112, 159, 168, 212, 318, 336, 371, 424, 636, 742, 848, 1113, 1181, 1272, 1484, 2226, 2362, 2544, 2968, 3543, 4452, 4724, 5936, 7086, 8267, 8904, 9448, 14172, 16534, 17808, 18896, 24801, 28344, 33068, 49602, 56688, 62593, 66136, 99204, 125186, 132272, 187779, 198408, 250372, 375558, 396816, 438151, 500744, 751116, 876302, 1001488, 1314453, 1502232, 1752604, 2628906, 3004464, 3505208, 5257812, 7010416, 10515624, 21031248]

約数ペア:

[(1, 21031248), (2, 10515624), (3, 7010416), (4, 5257812), (6, 3505208), (7, 3004464), (8, 2628906), (12, 1752604), (14, 1502232), (16, 1314453), (21, 1001488), (24, 876302), (28, 751116), (42, 500744), (48, 438151), (53, 396816), (56, 375558), (84, 250372), (106, 198408), (112, 187779), (159, 132272), (168, 125186), (212, 99204), (318, 66136), (336, 62593), (371, 56688), (424, 49602), (636, 33068), (742, 28344), (848, 24801), (1113, 18896), (1181, 17808), (1272, 16534), (1484, 14172), (2226, 9448), (2362, 8904), (2544, 8267), (2968, 7086), (3543, 5936), (4452, 4724)]