219520

素因数分解:

$2^7\times 5^1\times 7^3$

素因数の和:40

約数の個数: 64

約数和(自身を含む): 612000

約数和(自身を除く): 392480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 196, 224, 245, 280, 320, 343, 392, 448, 490, 560, 640, 686, 784, 896, 980, 1120, 1372, 1568, 1715, 1960, 2240, 2744, 3136, 3430, 3920, 4480, 5488, 6272, 6860, 7840, 10976, 13720, 15680, 21952, 27440, 31360, 43904, 54880, 109760, 219520]

約数ペア:

[(1, 219520), (2, 109760), (4, 54880), (5, 43904), (7, 31360), (8, 27440), (10, 21952), (14, 15680), (16, 13720), (20, 10976), (28, 7840), (32, 6860), (35, 6272), (40, 5488), (49, 4480), (56, 3920), (64, 3430), (70, 3136), (80, 2744), (98, 2240), (112, 1960), (128, 1715), (140, 1568), (160, 1372), (196, 1120), (224, 980), (245, 896), (280, 784), (320, 686), (343, 640), (392, 560), (448, 490)]