208512140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{499}}^1\times {\mathrm{1229}}^1$

素因数の和:1754

約数の個数: 48

約数和(自身を含む): 464940000

約数和(自身を除く): 256427860

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 499, 998, 1229, 1996, 2458, 2495, 4916, 4990, 6145, 8483, 9980, 12290, 16966, 20893, 24580, 33932, 41786, 42415, 83572, 84830, 104465, 169660, 208930, 417860, 613271, 1226542, 2453084, 3066355, 6132710, 10425607, 12265420, 20851214, 41702428, 52128035, 104256070, 208512140]

約数ペア:

[(1, 208512140), (2, 104256070), (4, 52128035), (5, 41702428), (10, 20851214), (17, 12265420), (20, 10425607), (34, 6132710), (68, 3066355), (85, 2453084), (170, 1226542), (340, 613271), (499, 417860), (998, 208930), (1229, 169660), (1996, 104465), (2458, 84830), (2495, 83572), (4916, 42415), (4990, 41786), (6145, 33932), (8483, 24580), (9980, 20893), (12290, 16966)]