2681560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:236

約数の個数: 64

約数和(自身を含む): 7053120

約数和(自身を除く): 4371560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 61, 70, 122, 140, 157, 244, 280, 305, 314, 427, 488, 610, 628, 785, 854, 1099, 1220, 1256, 1570, 1708, 2135, 2198, 2440, 3140, 3416, 4270, 4396, 5495, 6280, 8540, 8792, 9577, 10990, 17080, 19154, 21980, 38308, 43960, 47885, 67039, 76616, 95770, 134078, 191540, 268156, 335195, 383080, 536312, 670390, 1340780, 2681560]

約数ペア:

[(1, 2681560), (2, 1340780), (4, 670390), (5, 536312), (7, 383080), (8, 335195), (10, 268156), (14, 191540), (20, 134078), (28, 95770), (35, 76616), (40, 67039), (56, 47885), (61, 43960), (70, 38308), (122, 21980), (140, 19154), (157, 17080), (244, 10990), (280, 9577), (305, 8792), (314, 8540), (427, 6280), (488, 5495), (610, 4396), (628, 4270), (785, 3416), (854, 3140), (1099, 2440), (1220, 2198), (1256, 2135), (1570, 1708)]