28687040

素因数分解:

$2^6\times 5^1\times {\mathrm{157}}^1\times {\mathrm{571}}^1$

素因数の和:745

約数の個数: 56

約数和(自身を含む): 68866512

約数和(自身を除く): 40179472

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 157, 160, 314, 320, 571, 628, 785, 1142, 1256, 1570, 2284, 2512, 2855, 3140, 4568, 5024, 5710, 6280, 9136, 10048, 11420, 12560, 18272, 22840, 25120, 36544, 45680, 50240, 89647, 91360, 179294, 182720, 358588, 448235, 717176, 896470, 1434352, 1792940, 2868704, 3585880, 5737408, 7171760, 14343520, 28687040]

約数ペア:

[(1, 28687040), (2, 14343520), (4, 7171760), (5, 5737408), (8, 3585880), (10, 2868704), (16, 1792940), (20, 1434352), (32, 896470), (40, 717176), (64, 448235), (80, 358588), (157, 182720), (160, 179294), (314, 91360), (320, 89647), (571, 50240), (628, 45680), (785, 36544), (1142, 25120), (1256, 22840), (1570, 18272), (2284, 12560), (2512, 11420), (2855, 10048), (3140, 9136), (4568, 6280), (5024, 5710)]