21115728

素因数分解:

$2^4\times 3^5\times {\mathrm{5431}}^1$

素因数の和:5454

約数の個数: 60

約数和(自身を含む): 61294688

約数和(自身を除く): 40178960

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 48, 54, 72, 81, 108, 144, 162, 216, 243, 324, 432, 486, 648, 972, 1296, 1944, 3888, 5431, 10862, 16293, 21724, 32586, 43448, 48879, 65172, 86896, 97758, 130344, 146637, 195516, 260688, 293274, 391032, 439911, 586548, 782064, 879822, 1173096, 1319733, 1759644, 2346192, 2639466, 3519288, 5278932, 7038576, 10557864, 21115728]

約数ペア:

[(1, 21115728), (2, 10557864), (3, 7038576), (4, 5278932), (6, 3519288), (8, 2639466), (9, 2346192), (12, 1759644), (16, 1319733), (18, 1173096), (24, 879822), (27, 782064), (36, 586548), (48, 439911), (54, 391032), (72, 293274), (81, 260688), (108, 195516), (144, 146637), (162, 130344), (216, 97758), (243, 86896), (324, 65172), (432, 48879), (486, 43448), (648, 32586), (972, 21724), (1296, 16293), (1944, 10862), (3888, 5431)]