21159040

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{4723}}^1$

素因数の和:4749

約数の個数: 64

約数和(自身を含む): 57821760

約数和(自身を除く): 36662720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 280, 320, 448, 560, 640, 896, 1120, 2240, 4480, 4723, 9446, 18892, 23615, 33061, 37784, 47230, 66122, 75568, 94460, 132244, 151136, 165305, 188920, 264488, 302272, 330610, 377840, 528976, 604544, 661220, 755680, 1057952, 1322440, 1511360, 2115904, 2644880, 3022720, 4231808, 5289760, 10579520, 21159040]

約数ペア:

[(1, 21159040), (2, 10579520), (4, 5289760), (5, 4231808), (7, 3022720), (8, 2644880), (10, 2115904), (14, 1511360), (16, 1322440), (20, 1057952), (28, 755680), (32, 661220), (35, 604544), (40, 528976), (56, 377840), (64, 330610), (70, 302272), (80, 264488), (112, 188920), (128, 165305), (140, 151136), (160, 132244), (224, 94460), (280, 75568), (320, 66122), (448, 47230), (560, 37784), (640, 33061), (896, 23615), (1120, 18892), (2240, 9446), (4480, 4723)]