19407920

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{4951}}^1$

素因数の和:4978

約数の個数: 60

約数和(自身を含む): 52501104

約数和(自身を除く): 33093184

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 4951, 9902, 19804, 24755, 34657, 39608, 49510, 69314, 79216, 99020, 138628, 173285, 198040, 242599, 277256, 346570, 396080, 485198, 554512, 693140, 970396, 1212995, 1386280, 1940792, 2425990, 2772560, 3881584, 4851980, 9703960, 19407920]

約数ペア:

[(1, 19407920), (2, 9703960), (4, 4851980), (5, 3881584), (7, 2772560), (8, 2425990), (10, 1940792), (14, 1386280), (16, 1212995), (20, 970396), (28, 693140), (35, 554512), (40, 485198), (49, 396080), (56, 346570), (70, 277256), (80, 242599), (98, 198040), (112, 173285), (140, 138628), (196, 99020), (245, 79216), (280, 69314), (392, 49510), (490, 39608), (560, 34657), (784, 24755), (980, 19804), (1960, 9902), (3920, 4951)]